@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --primary: #0b5ed7;
    --primary-hover: #0045a3;
    --primary-light: #eff6ff;
    --border-color: #e2e8f0;
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Hero Section (Mockup Blue Top) */
.hero-section {
    background: linear-gradient(135deg, #0b5ed7 0%, #0045a3 100%);
    color: #ffffff;
    position: relative;
    padding: 3rem 1.5rem 6rem 1.5rem; /* Reduced bottom padding */
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

/* Logo Badge */
.logo-container {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    animation: fadeInDown var(--transition-normal);
}

.education-logo {
    max-height: 75px;
    width: auto;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.1));
}

.hero-subtitle {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.5rem;
    animation: fadeInDown var(--transition-normal);
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: #ffffff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    margin-bottom: 2.5rem;
    animation: fadeInDown var(--transition-normal);
}

/* Wave Separation Curve */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    pointer-events: none;
    z-index: 1;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 100%;
}

.hero-wave path {
    fill: var(--bg-main);
}

/* Floating Search Card */
.search-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2.5rem 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    max-width: 720px;
    margin: -100px auto 3.5rem auto; /* Negative margin pulls it up over the hero section bottom */
    position: relative;
    z-index: 20;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.8);
    animation: fadeInUp var(--transition-normal);
}

.search-card-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary-hover);
    text-align: center;
    margin-bottom: 2rem;
    letter-spacing: 0.03em;
    position: relative;
}

/* Search Form Grid Layout */
.search-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    align-items: center;
    gap: 1rem;
}

.form-label {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.input-container {
    position: relative;
    width: 100%;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-fast);
    background-color: #ffffff;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(11, 94, 215, 0.12);
}

/* Input clear button */
.search-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 5;
}

.search-clear.visible {
    opacity: 1;
    visibility: visible;
}

.search-clear:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.search-clear svg {
    width: 0.875rem;
    height: 0.875rem;
}

/* Autocomplete suggestions */
.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-top: 4px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    max-height: 200px;
    overflow-y: auto;
    display: none;
}

.autocomplete-dropdown.visible {
    display: block;
}

.autocomplete-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #f1f5f9;
    transition: var(--transition-fast);
}

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

.autocomplete-item:hover, .autocomplete-item.active {
    background-color: var(--primary-light);
}

.autocomplete-sbd {
    font-weight: 700;
    font-family: monospace;
    color: var(--primary);
}

.autocomplete-details {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background-color: var(--bg-main);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Captcha Layout */
.captcha-container {
    display: grid;
    grid-template-columns: 1fr 120px 42px;
    gap: 0.5rem;
    align-items: center;
}

.captcha-display {
    height: 100%;
    min-height: 42px;
    background-color: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 0.35em;
    padding-left: 0.35em;
    color: var(--primary-hover);
    user-select: none;
    position: relative;
    overflow: hidden;
    transform: skewX(-4deg);
    text-shadow: 1px 1px 1px #ffffff, -1px -1px 1px rgba(0,0,0,0.1);
    background-image: radial-gradient(#cbd5e1 15%, transparent 16%), radial-gradient(#cbd5e1 15%, transparent 16%);
    background-size: 12px 12px;
    background-position: 0 0, 6px 6px;
}

.btn-captcha-reload {
    height: 42px;
    width: 42px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    background: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-captcha-reload:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
}

.btn-captcha-reload:hover svg {
    transform: rotate(180deg);
}

.btn-captcha-reload svg {
    width: 1.2rem;
    height: 1.2rem;
    color: var(--text-secondary);
    transition: transform 0.4s ease;
}

/* Submit Button */
.btn-search-submit {
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 0.95rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: block;
    width: 100%;
    transition: var(--transition-fast);
    letter-spacing: 0.05em;
    box-shadow: 0 4px 10px rgba(11, 94, 215, 0.15);
    margin-top: 1rem;
}

.btn-search-submit:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(11, 94, 215, 0.2);
}

.btn-search-submit:active {
    transform: translateY(0);
}

/* Quick Search Suggestions */
.suggestions-hint {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    font-size: 0.825rem;
    color: var(--text-secondary);
    border-top: 1px dashed var(--border-color);
    padding-top: 1rem;
}

.suggestion-tag {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.2rem 0.5rem;
    cursor: pointer;
    font-family: monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition-fast);
}

.suggestion-tag:hover {
    background-color: var(--primary-light);
    border-color: rgba(11, 94, 215, 0.2);
}

/* Main Container (Below Hero section) */
.main-container {
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem 2rem 1.5rem;
    flex-grow: 1;
}

/* Result Section Container */
.result-section {
    display: none;
    margin-bottom: 3.5rem;
    animation: slideUp var(--transition-normal);
}

.result-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.result-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}

.student-identity {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.avatar-circle {
    width: 3.25rem;
    height: 3.25rem;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    border: 2px solid rgba(11, 94, 215, 0.1);
}

.student-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.student-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.total-score-badge {
    text-align: right;
}

.total-score-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.total-score-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

/* Grades Grid */
.grades-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.grade-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    transition: var(--transition-fast);
}

.grade-card:hover {
    border-color: rgba(11, 94, 215, 0.2);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.grade-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.grade-score {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* Status Banner */
.status-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
}

.status-banner.danger {
    background-color: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.status-banner svg {
    flex-shrink: 0;
}

/* Empty or Error state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 3rem 1.5rem;
    background: #ffffff;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-xl);
    animation: fadeIn var(--transition-normal);
}

.empty-icon {
    font-size: 2.5rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.empty-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 360px;
}

/* Trust Badges (Features) */
.features-section {
    margin-bottom: 3.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.15rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid rgba(11, 94, 215, 0.1);
}

.feature-icon svg {
    width: 1.6rem;
    height: 1.6rem;
}

.feature-info h3 {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--primary-hover);
    margin-bottom: 0.2rem;
    letter-spacing: 0.02em;
}

.feature-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.35;
}

/* Stats Section (Dashboard) */
.stats-section {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title svg {
    width: 1.35rem;
    height: 1.35rem;
    color: var(--primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    gap: 1.15rem;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.accent-green {
    background-color: var(--success-light);
    color: var(--success);
}

.stat-icon.accent-orange {
    background-color: var(--warning-light);
    color: var(--warning);
}

.stat-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
}

.stat-value {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-subtext {
    font-size: 0.725rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Secondary Stats: Subject Averages */
.stats-averages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-mini-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.stat-mini-label {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-mini-value {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary);
}

/* Footer styling */
footer {
    text-align: center;
    padding: 2rem 1.5rem;
    font-size: 0.825rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    background-color: #ffffff;
    margin-top: auto;
}

/* Keyframe Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Styles */
@media (max-width: 768px) {
    .hero-section {
        padding: 2.5rem 1rem 5rem 1rem;
    }
    
    .hero-title {
        font-size: 1.65rem;
        margin-bottom: 2rem;
    }
    
    .search-card {
        padding: 1.75rem 1.25rem;
        margin: -70px auto 2rem auto; /* Clean negative top margin for mobile overlay */
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }
    
    .form-label {
        font-size: 0.9rem;
    }
    
    .captcha-container {
        grid-template-columns: 1fr 100px 42px;
    }
    
    .main-container {
        margin: 0 auto;
        padding: 0 1rem 2rem 1rem;
    }
    
    .features-grid, .stats-grid, .stats-averages-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-card {
        padding: 1.25rem;
    }
    
    .grades-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .result-card {
        padding: 1.5rem;
    }
    
    .result-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .total-score-badge {
        text-align: left;
    }
}