/* ============================================
   FONT DECLARATIONS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Instrument+Serif:ital@0;1&display=swap');

/* Graphik font fallback - using similar system fonts */
@font-face {
    font-family: 'Graphik Medium';
    src: local('Inter Medium'), local('SF Pro Display Medium'), local('Segoe UI Semibold');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Graphik Regular';
    src: local('Inter'), local('SF Pro Display'), local('Segoe UI');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

/* ============================================
   ROOT VARIABLES & RESET - MINIMAL BLACK & WHITE
   ============================================ */
:root {
    /* Minimal Black & White Palette */
    --color-primary: #000000;
    --color-primary-dark: #000000;
    --color-secondary: #1a1a1a;
    --color-accent: #000000;
    --color-background: #ffffff;
    --color-surface: #ffffff;
    --color-text: #000000;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --color-hover: #f5f5f5;
    
    /* Minimal Gradients */
    --gradient-primary: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    --gradient-hero: linear-gradient(135deg, #000000 0%, #2a2a2a 100%);
    
    /* Minimal Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 8px 16px 0 rgba(0, 0, 0, 0.12);
    --shadow-3d: 0 2px 8px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Minimal Border Radius */
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 0;
    --radius-xl: 0;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body, #bodyid {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    text-align: center;
}

body.menu-open {
    overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.highlight-text,
.highlight-badge,
.about-text,
.section-subtitle {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
}

button, .btn-text {
    font-family: 'Inter', sans-serif;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: 'Inter', sans-serif;
    font-size: 1.25rem;
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.nav-logo svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.nav-logo i {
    font-size: 1.75rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
}

.nav-link {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 400;
    padding: var(--spacing-xs) 0;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
}

.btn-help {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
}

.btn-help svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn-help:hover {
    background: var(--color-secondary);
}

/* ============================================
   HAMBURGER MENU
   ============================================ */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: all var(--transition-base);
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Navigation Menu Container */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Mobile Menu Overlay */
body.menu-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    animation: fadeIn 0.3s ease;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    width: 100%;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.hero::before {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    width: 100%;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    font-style: italic;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--color-text-light);
    font-weight: 400;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-wave {
    display: none;
}

.hero-wave svg {
    display: none;
}

.hero-wave .shape-fill {
    display: none;
}

/* ============================================
   MAIN CONTAINER & SECTIONS
   ============================================ */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    display: grid;
    gap: var(--spacing-lg);
    width: 100%;
}

.section-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    animation: fadeInUp 0.6s ease-out;
    width: 100%;
    box-sizing: border-box;
}

.section-card:hover {
    border-color: var(--color-primary);
}

/* Minimal Card Style */
.glass-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.card-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    width: 100%;
}

.section-title {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1.125rem, 3vw, 1.25rem);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-title svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.section-title i {
    color: var(--color-primary);
}

.section-icon {
    height: 30px;
    width: 40px;
    object-fit: contain;
}

.section-subtitle {
    font-family: 'Instrument Serif', Georgia, serif;
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: 400;
    font-style: italic;
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    text-align: left;
}

.form-control,
.modern-input,
.modern-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: 'Inter', sans-serif;
    font-size: 0.9375rem;
    color: var(--color-text);
    background: white;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    outline: none;
}

.form-control:focus,
.modern-input:focus,
.modern-select:focus {
    border-color: var(--color-primary);
    outline: 1px solid var(--color-primary);
}

.form-control::placeholder,
.modern-input::placeholder {
    color: var(--color-text-light);
}

/* Datalist dropdown styling */
datalist {
    position: absolute;
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: 0;
    max-height: 200px;
    overflow-y: auto;
}

datalist option {
    font-family: 'Inter', sans-serif;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-text);
    background: white;
    cursor: pointer;
}

datalist option:hover {
    background: var(--color-hover);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    align-items: end;
}

.via-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.toggle-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
}

/* ============================================
   BUTTONS - 3D STYLE
   ============================================ */
.btn-primary,
.btn-3d {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary::before {
    display: none;
}

.btn-primary:hover {
    background: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-flip {
    background: white;
    color: var(--color-primary);
    padding: var(--spacing-sm);
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
}

.btn-flip svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn-flip:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn-reset {
    background: white;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-reset svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-reset:hover {
    background: var(--color-primary);
    color: white;
}

.flip-button-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    padding-bottom: 0;
    margin-bottom: 0;
}

.reset-container {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

/* ============================================
   TOGGLE SWITCH
   ============================================ */
.switch {
    position: relative;
    display: inline-block;
    width: 56px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-border);
    transition: var(--transition-base);
    border: 1px solid var(--color-border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: white;
    transition: var(--transition-base);
    border: 1px solid var(--color-border);
}

input:checked + .slider {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

input:focus + .slider {
    outline: 1px solid var(--color-primary);
}

input:checked + .slider:before {
    transform: translateX(28px);
    border-color: var(--color-primary);
}

.slider.round {
    border-radius: 0;
}

.slider.round:before {
    border-radius: 0;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    width: 90%;
    max-width: 800px;
    border: 1px solid var(--color-border);
    animation: slideInDown 0.4s ease;
}

.modal-header {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-family: 'Inter', sans-serif;
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.close {
    color: white;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.5);
    width: 32px;
    height: 32px;
    font-size: 1.25rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.close:hover,
.close:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
}

.modal-body {
    padding: var(--spacing-lg);
    max-height: 70vh;
    overflow-y: auto;
}

.help-content {
    font-family: 'Inter', sans-serif;
    line-height: 1.8;
    color: var(--color-text);
}

.welcome-text {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.help-list {
    text-align: left;
    padding-left: var(--spacing-lg);
}

.help-list li {
    margin-bottom: var(--spacing-md);
}

.help-list strong {
    font-family: 'Inter', sans-serif;
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.help-list ul {
    margin-top: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.status-green { color: #10b981; font-weight: 600; }
.status-red { color: #ef4444; font-weight: 600; }
.status-black { color: #1e293b; font-weight: 600; }

.help-tips {
    background: var(--color-hover);
    border-left: 2px solid var(--color-primary);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.help-tips p {
    font-family: 'Inter', sans-serif;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.thank-you {
    text-align: center;
    font-style: italic;
    color: var(--color-text-light);
    margin-top: var(--spacing-lg);
}

/* ============================================
   NEWS SECTION
   ============================================ */
.news-card {
    background: var(--color-surface);
    border-left: 2px solid var(--color-primary);
}

.news-header {
    margin-bottom: var(--spacing-md);
}

.highlight-badge {
    font-family: 'Instrument Serif', Georgia, serif;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 400;
    font-style: italic;
}

.news-content {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text);
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--color-border);
    font-style: italic;
}

/* ============================================
   RESULTS DISPLAY
   ============================================ */
.results-container {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.result-content {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-left: 2px solid var(--color-primary);
    animation: fadeIn 0.5s ease;
}

.result-content:empty {
    display: none;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    background: var(--color-background);
    color: var(--color-text);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    padding: 0 var(--spacing-md);
}

.about-title {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1.5rem, 4vw, 1.75rem);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.about-text {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-light);
    font-style: italic;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-lg);
    margin-top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-text {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: white;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-made {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
}

.footer-by {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-weight: 400;
}

.heart {
    color: #ff0000;
    animation: heartbeat 1.5s ease-in-out infinite;
    display: inline-block;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.1);
    }
    50% {
        transform: scale(1);
    }
}

.footer-link {
    color: white;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-bottom: 1px solid white;
    padding-bottom: 2px;
}

.footer-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.footer-link:hover {
    color: rgba(255, 255, 255, 0.8);
    border-bottom-color: rgba(255, 255, 255, 0.8);
}

.footer-link:hover svg {
    transform: scale(1.1);
}
/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease-out;
}

/* Staggered animation for multiple cards */
.section-card:nth-child(1) { animation-delay: 0.1s; }
.section-card:nth-child(2) { animation-delay: 0.2s; }
.section-card:nth-child(3) { animation-delay: 0.3s; }
.section-card:nth-child(4) { animation-delay: 0.4s; }
.section-card:nth-child(5) { animation-delay: 0.5s; }

/* ============================================
   TABLES (for results display)
   ============================================ */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    background: white;
    border: 1px solid var(--color-border);
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-family: 'Inter', sans-serif;
    background: var(--color-primary);
    color: white;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

tr:hover {
    background: var(--color-hover);
}

tr:last-child td {
    border-bottom: none;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 992px) {
    /* Show hamburger menu on tablet and mobile */
    .hamburger {
        display: flex;
    }
    
    /* Hide menu by default on mobile */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--color-surface);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 80px var(--spacing-lg) var(--spacing-lg);
        box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
        transition: right var(--transition-base);
        z-index: 1000;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0;
        width: 100%;
        align-items: stretch;
        border: none;
        padding: 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .nav-links li {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-md) 0;
        font-size: 1rem;
        text-align: left;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
        align-items: stretch;
    }
    
    .btn-help {
        width: 100%;
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .flip-button-container {
        justify-content: flex-start;
        padding-bottom: 0;
        padding-top: var(--spacing-xs);
    }
    
    .btn-flip {
        transform: rotate(90deg);
    }
    
    .btn-flip:hover {
        transform: rotate(270deg) scale(1.1);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-lg: 1rem;
        --spacing-md: 0.75rem;
    }
    
    body, #bodyid {
        padding: 0;
    }
    
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-logo {
        font-size: 1.125rem;
    }
    
    .nav-links {
        gap: 0;
        font-size: 0.9375rem;
    }
    
    .hero {
        min-height: 250px;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 0.9375rem;
    }
    
    .main-container {
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .section-card {
        padding: var(--spacing-md);
        width: 100%;
    }
    
    .card-header {
        margin-bottom: var(--spacing-md);
    }
    
    .section-title {
        font-size: 1.125rem;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .section-subtitle {
        font-size: 0.8125rem;
    }
    
    .form-group {
        width: 100%;
    }
    
    .form-control,
    .modern-input,
    .modern-select {
        font-size: 0.875rem;
    }
    
    .btn-primary {
        width: 100%;
        font-size: 0.875rem;
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .footer {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-sm);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: 0;
    }
    
    .footer-section {
        width: 100%;
        padding: 0;
    }
    
    .footer-title {
        font-size: 1rem;
    }
    
    .footer-subtitle {
        font-size: 0.875rem;
    }
    
    .footer-text {
        font-size: 0.8125rem;
    }
    
    .github-link {
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .footer-bottom {
        font-size: 0.75rem;
        padding: var(--spacing-md) var(--spacing-xs) 0;
    }
    
    .about-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 1.25rem;
        --spacing-lg: 0.875rem;
        --spacing-md: 0.625rem;
        --spacing-sm: 0.5rem;
    }
    
    .nav-container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .nav-logo {
        font-size: 1rem;
    }
    
    .nav-logo i {
        font-size: 1.25rem;
    }
    
    .hamburger {
        width: 24px;
        height: 18px;
    }
    
    .nav-menu {
        width: 280px;
        padding: 70px var(--spacing-md) var(--spacing-md);
    }
    
    .nav-actions {
        gap: var(--spacing-xs);
    }
    
    .btn-help {
        font-size: 0.8125rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .hero {
        min-height: 200px;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.875rem;
    }
    
    .main-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .section-card {
        padding: var(--spacing-sm);
    }
    
    .section-icon {
        height: 18px;
        width: 24px;
    }
    
    .section-title {
        font-size: 1rem;
    }
    
    .card-body {
        gap: var(--spacing-sm);
    }
    
    .form-label {
        font-size: 0.8125rem;
    }
    
    .form-control,
    .modern-input,
    .modern-select {
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .btn-primary,
    .btn-3d {
        font-size: 0.8125rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .modal-content {
        width: 98%;
        margin: 5% auto;
    }
    
    .modal-header h2 {
        font-size: 1rem;
    }
    
    .modal-body {
        padding: var(--spacing-sm);
    }
    
    .footer {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-xs);
    }
    
    .footer-content {
        gap: var(--spacing-md);
    }
    
    .footer-title {
        font-size: 0.9375rem;
    }
    
    .footer-subtitle {
        font-size: 0.8125rem;
    }
    
    .footer-text {
        font-size: 0.75rem;
    }
    
    .github-link {
        font-size: 0.8125rem;
        padding: 0.375rem 0.625rem;
    }
    
    .github-link i {
        font-size: 1rem;
    }
    
    .footer-bottom {
        font-size: 0.6875rem;
        padding: var(--spacing-sm) 0 0;
    }
    
    .footer-bottom p {
        line-height: 1.4;
    }
    
    .about-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .about-title {
        font-size: 1.25rem;
    }
    
    .about-text {
        font-size: 0.875rem;
    }
    
    .results-container {
        margin-top: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .result-content {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-background: #ffffff;
    }
    
    .btn-primary,
    .btn-3d {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hero,
    .about-section,
    .footer,
    .btn-primary,
    .btn-3d,
    .btn-flip,
    .btn-reset {
        display: none;
    }
    
    .section-card {
        box-shadow: none;
        border: 1px solid #000;
        page-break-inside: avoid;
    }
}