/* ===== style.css - REVISED WITH PROPER GHANA FLAG ===== */

:root {
    /* Ghana Colors - Enhanced for maximum contrast */
    --primary: #004D29;       /* Darker Ghana Green for better contrast */
    --secondary: #FFD100;     /* Brighter Ghana Yellow */
    --accent: #C8102E;        /* Stronger Ghana Red */
    
    /* Ghana Flag Colors - Correct ones from JS */
    --ghana-red: #CE1126;
    --ghana-gold: #FCD116;
    --ghana-green: #006B3F;
    --ghana-black: #000000;
    
    /* Light Theme (Default) - Better for readability */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;
    
    /* Text Colors - High contrast */
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-tertiary: #6C757D;
    
    /* Accent Colors */
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;
    
    /* UI Colors */
    --border: rgba(0, 0, 0, 0.1);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.2);
    
    /* Font Sizes - Larger for accessibility */
    --font-xs: 1rem;      /* 16px */
    --font-sm: 1.125rem;  /* 18px */
    --font-base: 1.25rem; /* 20px */
    --font-lg: 1.5rem;    /* 24px */
    --font-xl: 2rem;      /* 32px */
    --font-2xl: 2.5rem;   /* 40px */
    --font-3xl: 3.5rem;   /* 56px */
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-primary: #0D1B2A;
    --bg-secondary: #1B263B;
    --bg-tertiary: #415A77;
    
    --text-primary: #E0E1DD;
    --text-secondary: #B0BEC5;
    --text-tertiary: #78909C;
    
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* ===== BASE RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== IMPROVED TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-3xl);
    font-weight: 800;
}

h2 {
    font-size: var(--font-2xl);
}

h3 {
    font-size: var(--font-xl);
}

h4 {
    font-size: var(--font-lg);
}

p {
    font-size: var(--font-sm);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

strong, b {
    font-weight: 700;
    color: var(--text-primary);
}

/* ===== HIGH CONTRAST LINKS ===== */
a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

a:hover {
    color: var(--accent);
    border-bottom-color: var(--secondary);
}

/* ===== IMPROVED NAVIGATION ===== */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 3px solid var(--primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* ===== CORRECTED GHANA FLAG WITH BLACK STAR ===== */
.flag-mini {
    position: relative;
    width: 40px;
    height: 28px;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
    border: 2px solid var(--border);
}

.flag-red { 
    background: var(--ghana-red) !important; 
    height: 33.33% !important; 
}

.flag-yellow { 
    background: var(--ghana-gold) !important; 
    height: 33.33% !important; 
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

/* BLACK STAR - FIXED POSITION */
.flag-yellow::after {
    content: "★" !important;
    color: var(--ghana-black) !important;
    font-size: 14px !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3) !important;
    font-weight: 900 !important;
    z-index: 10 !important;
    line-height: 1 !important;
}

.flag-green { 
    background: var(--ghana-green) !important; 
    height: 33.33% !important; 
}

.nav-logo h1 {
    font-size: 1.5rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.nav-links a {
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: var(--font-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: 2px solid transparent;
    background: transparent;
}

.nav-links a:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border);
    transform: translateY(-2px);
}

.nav-links a.active {
    background: linear-gradient(135deg, var(--primary), #00704a);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow);
}

.nav-links a i {
    font-size: 1.25rem;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    transform: rotate(15deg);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ===== IMPROVED HERO SECTION ===== */
.hero {
    padding: var(--space-2xl) 2rem;
    background: linear-gradient(135deg, var(--ghana-red) 0%, var(--ghana-green) 100%);
    position: relative;
    overflow: hidden;
    min-height: 85vh;
    display: flex;
    align-items: center;
    color: white;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: white;
}

.hero-badge {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.badge {
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: var(--font-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.hero-title {
    font-size: var(--font-3xl);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    color: white;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--ghana-gold), #FFE55C);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-base);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--space);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: var(--font-2xl);
    font-weight: 800;
    color: var(--ghana-gold);
    margin-bottom: 0.25rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-xs);
    font-weight: 500;
}

.hero-visual {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.visual-card {
    position: relative;
}

.chart-preview {
    height: 200px;
    margin-bottom: var(--space);
}

.live-ticker {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--space);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ticker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space);
    color: white;
}

.ticker-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ticker-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

.ticker-item:last-child {
    border-bottom: none;
}

.ticker-value {
    font-weight: 700;
    font-size: var(--font-sm);
}

.ticker-change {
    font-weight: 600;
    font-size: var(--font-xs);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.ticker-change.positive {
    background: rgba(40, 167, 69, 0.2);
    color: #28A745;
}

.ticker-change.negative {
    background: rgba(220, 53, 69, 0.2);
    color: #DC3545;
}

/* ===== IMPROVED AI ASSISTANT (COMBINED STYLES) ===== */
.ai-assistant {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 400px;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    display: none;
    overflow: hidden;
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.ai-assistant.active {
    display: block;
    animation: slideInUp 0.3s ease;
    transform: translateY(0);
    opacity: 1;
}

.ai-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    border-bottom: 1px solid var(--border);
    color: white;
    border-radius: 10px 10px 0 0;
    position: relative;
}

.ai-avatar {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.ai-info {
    flex: 1;
}

.ai-info h4 {
    margin: 0;
    font-size: 1rem;
    color: white;
}

.ai-info p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.9;
    color: rgba(255, 255, 255, 0.9);
}

.ai-badges {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.ai-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 50px;
    font-size: 0.7rem;
}

.ai-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.ai-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.ai-chat {
    height: 300px;
    padding: 1.5rem;
    overflow-y: auto;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.ai-message {
    margin-bottom: 1rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    max-width: 85%;
    font-size: var(--font-sm);
    line-height: 1.5;
    word-wrap: break-word;
}

.ai-message.user {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.ai-message.ai {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    margin-right: auto;
    border-bottom-left-radius: 4px;
    border: 1px solid var(--border);
}

.ai-message.ai .message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.ai-message.ai .message-header i {
    color: var(--primary);
}

.ai-message.ai ul {
    margin-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.ai-message.ai li {
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.ai-message.ai strong {
    color: var(--primary);
}

.ai-message.ai code {
    background: rgba(0, 107, 63, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.ai-message.ai ul {
    margin-left: 20px;
    margin-bottom: 10px;
}

.ai-message.ai li {
    margin-bottom: 5px;
}

.ai-message.ai h3 {
    color: var(--primary);
    margin-bottom: 10px;
    border-bottom: 2px solid rgba(0, 107, 63, 0.2);
    padding-bottom: 5px;
}

.ai-message.ai h4 {
    color: var(--secondary);
    margin-bottom: 8px;
}

/* Typing indicator */
.typing {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

.ai-input {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
}

.ai-input input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: var(--font-sm);
    outline: none;
    transition: var(--transition);
}

.ai-input input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 107, 63, 0.1);
}

.ai-input button {
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    border: none;
    border-radius: var(--radius);
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.ai-input button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.ai-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    border-radius: 50%;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.ai-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 10px 25px rgba(0, 107, 63, 0.4);
}

.ai-pulse {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--ghana-gold);
    opacity: 0.3;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.1; }
    100% { transform: scale(1); opacity: 0.3; }
}

@keyframes slideInUp {
    from { transform: translateY(100px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ===== IMPROVED BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: var(--font-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-height: 48px;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--ghana-green), var(--ghana-red));
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: var(--font-base);
    min-height: 56px;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-xs);
    min-height: 36px;
}

.btn-xl {
    padding: 1.5rem 3rem;
    font-size: var(--font-lg);
    min-height: 64px;
}

/* ===== IMPROVED FEATURES SECTION ===== */
.features {
    padding: var(--space-2xl) 2rem;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: var(--font-2xl);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: var(--font-base);
    line-height: 1.7;
}

.section-highlight {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--ghana-green);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: white;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: var(--font-lg);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.feature-list {
    list-style: none;
    margin: var(--space-lg) 0;
    flex-grow: 1;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.feature-list li i {
    color: var(--success);
    flex-shrink: 0;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ghana-green);
    font-weight: 700;
    margin-top: auto;
    padding: 0.75rem 0;
    text-decoration: none;
    font-size: var(--font-sm);
    transition: var(--transition);
}

.feature-link:hover {
    gap: 1rem;
    color: var(--ghana-red);
}

/* ===== IMPROVED CALCULATOR STYLES ===== */
.calculator-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-2xl) 2rem;
}

.calculator-header {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-xl);
    color: white;
    text-align: center;
}

.calculator-header h1 {
    font-size: var(--font-2xl);
    margin-bottom: var(--space);
    color: white;
}

.calculator-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.calculator-interface {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 1024px) {
    .calculator-interface {
        grid-template-columns: 1fr;
    }
}

.controls-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    height: fit-content;
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow);
}

.control-section {
    margin-bottom: var(--space-xl);
}

.control-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    font-size: var(--font-lg);
}

.parameter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space);
}

.parameter {
    background: var(--bg-primary);
    padding: var(--space);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.parameter label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    font-size: var(--font-sm);
}

.parameter-value {
    color: var(--ghana-green);
    font-weight: 800;
    font-size: var(--font-sm);
}

/* Ghana-themed slider */
input[type="range"] {
    width: 100%;
    height: 10px;
    background: linear-gradient(to right, var(--ghana-red), var(--ghana-gold), var(--ghana-green));
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
    margin: 10px 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--ghana-black);
    border: 3px solid var(--ghana-gold);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    background: var(--ghana-green);
}

input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--ghana-black);
    border: 3px solid var(--ghana-gold);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.parameter-range {
    display: flex;
    justify-content: space-between;
    color: var(--text-tertiary);
    font-size: var(--font-xs);
    margin-top: 0.5rem;
}

.option-type-selector {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.option-type-btn {
    flex: 1;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
    font-weight: 600;
    font-size: var(--font-sm);
}

.option-type-btn.active {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow);
}

.control-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space);
    margin-top: var(--space-xl);
}

#runSimulation {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    color: white;
    border: 2px solid var(--ghana-gold);
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

#runSimulation:hover {
    background: linear-gradient(135deg, var(--ghana-green), var(--ghana-red));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(206, 17, 38, 0.3);
    border-color: var(--ghana-gold);
}

#runSimulation:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Results Panel */
.results-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.live-results {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
}

.live-results h3 {
    font-size: var(--font-lg);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space);
    margin-top: var(--space-lg);
}

.result-card {
    background: var(--bg-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.result-label {
    color: var(--text-tertiary);
    font-size: var(--font-xs);
    margin-bottom: 0.5rem;
    display: block;
    font-weight: 600;
}

.result-value {
    font-size: var(--font-xl);
    font-weight: 800;
    color: var(--ghana-green);
    margin: 0.5rem 0;
    display: block;
}

.result-change {
    font-size: var(--font-xs);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    margin-top: 0.5rem;
}

.result-change.positive {
    background: rgba(0, 107, 63, 0.1);
    color: var(--ghana-green);
}

.result-change.negative {
    background: rgba(206, 17, 38, 0.1);
    color: var(--ghana-red);
}

.result-change.neutral {
    background: rgba(108, 117, 125, 0.1);
    color: var(--text-tertiary);
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space);
}

.chart-wrapper {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    border: 2px solid rgba(206, 17, 38, 0.1);
    box-shadow: var(--shadow);
}

.chart-wrapper h4 {
    font-size: var(--font-base);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.chart-container {
    height: 250px;
    margin-top: var(--space);
}

/* Greeks */
.greeks-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
}

.greeks-section h3 {
    font-size: var(--font-lg);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.greeks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space);
    margin-top: var(--space);
}

.greek-card {
    background: var(--bg-primary);
    padding: var(--space);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.greek-card:hover {
    transform: translateY(-5px);
    border-color: var(--ghana-green);
    box-shadow: var(--shadow);
}

.greek-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.greek-name {
    color: var(--text-tertiary);
    font-size: var(--font-xs);
    font-weight: 700;
}

.greek-value {
    font-size: var(--font-base);
    font-weight: 800;
    color: var(--ghana-green);
}

.greek-desc {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.greek-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.greek-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ghana-red), var(--ghana-gold), var(--ghana-green));
    border-radius: 3px;
    transition: width 0.3s ease;
}

.greek-fill.negative {
    background: linear-gradient(90deg, var(--ghana-red), #8B0000);
}

/* Transactions */
.transactions-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
}

.transactions-section h3 {
    font-size: var(--font-lg);
    margin-bottom: var(--space);
    color: var(--text-primary);
}

.table-container {
    overflow-x: auto;
    margin-top: var(--space);
}

.transactions-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.transactions-table th {
    background: linear-gradient(135deg, var(--ghana-red), var(--ghana-green));
    padding: 1rem;
    text-align: left;
    font-weight: 700;
    color: white;
    border-bottom: 2px solid var(--border);
    font-size: var(--font-sm);
    white-space: nowrap;
}

.transactions-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.transactions-table tr:hover {
    background: rgba(252, 209, 22, 0.05);
}

.transactions-table td.positive {
    color: var(--ghana-green);
    font-weight: 700;
}

.transactions-table td.negative {
    color: var(--ghana-red);
    font-weight: 700;
}

.empty-message {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-tertiary);
}

.empty-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

/* ===== IMPROVED PARTNERS SECTION ===== */
.partners-section {
    padding: var(--space-2xl) 2rem;
    background: var(--bg-secondary);
}

.partners-grid {
    max-width: 1200px;
    margin: var(--space-2xl) auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.partner {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 2px solid var(--border);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.partner:hover {
    transform: translateY(-10px);
    border-color: var(--ghana-green);
    box-shadow: var(--shadow-lg);
}

.partner-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space);
    color: var(--ghana-green);
    font-size: 2rem;
}

.partner h3 {
    font-size: var(--font-base);
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.partner p {
    color: var(--text-tertiary);
    font-size: var(--font-xs);
    margin-bottom: 0;
}

/* ===== IMPROVED FOOTER ===== */
.footer {
    background: var(--bg-tertiary);
    border-top: 2px solid var(--border);
    padding: var(--space-2xl) 2rem var(--space-xl);
    margin-top: var(--space-2xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
    .footer-main {
        grid-template-columns: 1fr;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space);
    margin-bottom: var(--space);
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    line-height: 1.6;
    margin-bottom: var(--space);
}

.footer-social {
    display: flex;
    gap: var(--space);
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 1.25rem;
}

.social-link:hover {
    background: var(--ghana-green);
    color: white;
    transform: translateY(-3px) rotate(15deg);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 1024px) {
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .footer-links {
        grid-template-columns: 1fr;
    }
}

.link-group h3 {
    font-size: var(--font-base);
    margin-bottom: var(--space);
    color: var(--text-primary);
    font-weight: 700;
}

.link-group a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: var(--font-sm);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.25rem 0;
}

.link-group a:hover {
    color: var(--ghana-green);
    padding-left: 0.5rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
    margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: var(--space);
        text-align: center;
    }
}

.tech-badges {
    display: flex;
    gap: var(--space);
    flex-wrap: wrap;
}

.tech-badge {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-weight: 600;
}

.footer-credits {
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--font-xs);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
}

.footer-credits a {
    color: var(--ghana-green);
    text-decoration: none;
    font-weight: 700;
}

.version {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.7;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 6rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: var(--ghana-green);
    border-radius: 50%;
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--ghana-red);
    transform: translateY(-5px) scale(1.1);
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}

/* Ghana flag loader with black star */
.ghana-flag-loader {
    position: relative;
    width: 80px;
    height: 56px;
    border-radius: 8px;
    overflow: hidden;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow);
}

.ghana-flag-loader::before,
.ghana-flag-loader::after,
.ghana-flag-loader .flag-star {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 33.33%;
}

.ghana-flag-loader::before {
    top: 0;
    background: var(--ghana-red);
}

.ghana-flag-loader::after {
    bottom: 0;
    background: var(--ghana-green);
}

.ghana-flag-loader .flag-star {
    top: 33.33%;
    height: 33.33%;
    background: var(--ghana-gold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ghana-flag-loader .flag-star::after {
    content: "★";
    color: var(--ghana-black);
    font-size: 16px;
    font-weight: 900;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--ghana-green);
    border-radius: 50%;
    margin: 2rem auto 0;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    :root {
        --font-3xl: 2.5rem;
        --font-2xl: 2rem;
        --font-xl: 1.75rem;
        --font-lg: 1.25rem;
        --font-base: 1.125rem;
        --font-sm: 1rem;
        --font-xs: 0.875rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 1rem;
        border-top: 2px solid var(--border);
        display: none;
        box-shadow: var(--shadow-lg);
        z-index: 1000;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    /* AI Assistant Responsive */
    .ai-assistant {
        width: calc(100% - 2rem);
        right: 1rem;
        bottom: 5rem;
    }
    
    .calculator-interface {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-sm);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }
    
    .greeks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-xl);
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .results-grid,
    .greeks-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* AI Assistant Mobile Responsive */
    .ai-assistant {
        width: calc(100vw - 40px);
        right: 20px;
        bottom: 80px;
    }
    
    .ai-toggle {
        bottom: 20px;
        right: 20px;
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --primary: #002E00;
        --secondary: #FFD700;
        --accent: #990000;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border: #000000;
        --ghana-red: #8B0000;
        --ghana-gold: #FFD700;
        --ghana-green: #006400;
        --ghana-black: #000000;
    }
}

/* Focus styles for keyboard navigation */
*:focus {
    outline: 3px solid var(--ghana-gold);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--ghana-green);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 700;
    z-index: 1001;
}

.skip-link:focus {
    top: 0;
}

/* Print styles */
@media print {
    .navbar,
    .ai-assistant,
    .ai-toggle,
    .back-to-top,
    .hero-cta,
    .theme-toggle,
    .mobile-menu-btn {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
    
    .hero {
        background: white !important;
        color: black !important;
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero-title,
    .hero-subtitle,
    .hero-stats {
        color: black !important;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    gap: var(--space);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Developer Credit Styles */
.developer-credit {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 3px solid var(--ghana-gold);
    background: linear-gradient(135deg, rgba(206, 17, 38, 0.05), rgba(252, 209, 22, 0.05), rgba(0, 107, 63, 0.05));
    padding: 2rem;
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.developer-credit::before {
    content: "★";
    position: absolute;
    top: 10px;
    right: 10px;
    color: var(--ghana-gold);
    font-size: 24px;
    opacity: 0.3;
}

.developer-credit h3 {
    color: var(--ghana-green);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.developer-credit h3 i {
    color: var(--ghana-red);
}

.developer-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .developer-info {
        grid-template-columns: 1fr;
    }
}

.developer-info p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 3px solid var(--ghana-gold);
    padding-left: 1rem;
    margin-bottom: 1rem;
}

.developer-info p:last-child {
    margin-bottom: 0;
}

.developer-info i {
    color: var(--ghana-red);
    width: 20px;
    flex-shrink: 0;
}

.developer-info strong {
    color: var(--text-primary);
    font-weight: 600;
}

.developer-info a {
    color: var(--ghana-green);
    text-decoration: none;
    font-weight: 600;
}

.developer-info a:hover {
    color: var(--ghana-red);
    text-decoration: underline;
}

/* Section headings with Ghana flag colors */
h2, h3 {
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after, h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--ghana-red), var(--ghana-gold), var(--ghana-green));
    border-radius: 2px;
}

.fa-spinner.fa-spin {
    color: var(--ghana-gold);
}