/* ==========================================================================
   Math Test Score Portal - Nong Wua So Phittayakom School
   Responsive Design System: Desktop, Samsung Tab S10 FE & Mobile Light Glassmorphism
   ========================================================================== */

:root {
    --font-primary: 'Prompt', 'Kanit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Kanit', 'Prompt', sans-serif;
    
    /* Color Palette */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #7c3aed;
    --color-accent: #0891b2;
    
    --color-text-dark: #0f172a;
    --color-text-muted: #475569;
    --color-text-light: #94a3b8;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    /* Glassmorphism Tokens */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-bg-hover: rgba(255, 255, 255, 0.88);
    --glass-border: 1px solid rgba(255, 255, 255, 0.9);
    --glass-border-subtle: 1px solid rgba(226, 232, 240, 0.7);
    --glass-shadow: 0 16px 40px 0 rgba(31, 38, 135, 0.08), 0 4px 14px 0 rgba(0, 0, 0, 0.03);
    --glass-shadow-lg: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
    --glass-blur: blur(18px) saturate(190%);
    
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, #e0f2fe 0%, #eef2ff 35%, #f3e8ff 70%, #fce7f3 100%);
    background-attachment: fixed;
    color: var(--color-text-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Background Ambient Lighting Blobs */
.ambient-light {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
    animation: floatBlob 20s infinite ease-in-out alternate;
}

.blob-1 {
    width: 480px;
    height: 480px;
    background: #60a5fa;
    top: -120px;
    left: -120px;
}

.blob-2 {
    width: 520px;
    height: 520px;
    background: #c084fc;
    bottom: -150px;
    right: -120px;
    animation-delay: -5s;
}

.blob-3 {
    width: 380px;
    height: 380px;
    background: #f472b6;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes floatBlob {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, 35px) scale(1.1); }
    100% { transform: translate(-35px, 70px) scale(0.95); }
}

/* App Container */
.app-container {
    max-width: 960px;
    width: 92%;
    margin: 24px auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

/* Glass Panel Component */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.glass-pill {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-full);
    padding: 6px 16px;
}

/* Header & Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 28px;
    flex-wrap: wrap;
    gap: 14px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.school-logo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
}

.school-logo-img {
    height: 50px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.08));
    transition: transform 0.25s ease;
}

.school-logo-img:hover {
    transform: scale(1.05);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.school-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.app-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.84rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-top: 6px;
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
}

.status-dot.green {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

.btn-admin-toggle {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    outline: none;
    padding: 8px 18px;
}

.btn-admin-toggle:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* Search Card */
.search-card {
    text-align: center;
    padding: 42px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.12);
    color: #1d4ed8;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 5vw, 2.15rem);
    font-weight: 700;
    line-height: 1.35;
    color: #0f172a;
    background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    word-break: keep-all;
    word-wrap: break-word;
    text-wrap: balance;
    max-width: 680px;
}

.hero-subtitle {
    font-size: clamp(0.85rem, 3.5vw, 1.05rem);
    color: var(--color-text-muted);
    line-height: 1.5;
    max-width: 580px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.hero-subtitle .sub-line {
    display: block;
    white-space: nowrap;
}

/* Search Form */
.search-form {
    width: 100%;
    max-width: 540px;
    margin-top: 6px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 20px;
    font-size: 1.25rem;
    color: var(--color-primary);
    pointer-events: none;
}

.input-group input {
    width: 100%;
    min-height: 54px;
    padding: 14px 48px 14px 54px;
    font-family: var(--font-primary);
    font-size: 1.1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid rgba(203, 213, 225, 0.9);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    color: var(--color-text-dark);
    outline: none;
    transition: all 0.25s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.input-group input:focus {
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.btn-clear {
    position: absolute;
    right: 16px;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-clear:hover {
    color: var(--color-danger);
}

.glass-btn {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    min-height: 52px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    border: var(--glass-border);
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 22px rgba(37, 99, 235, 0.35);
    transition: all 0.25s ease;
}

.glass-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.45);
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
}

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

/* Alert Box */
.glass-alert {
    width: 100%;
    max-width: 540px;
    background: rgba(254, 242, 242, 0.9);
    border: 1px solid rgba(248, 113, 113, 0.5);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    color: #991b1b;
    text-align: left;
    animation: fadeIn 0.3s ease;
}

.glass-alert.success {
    background: rgba(240, 253, 244, 0.9);
    border-color: rgba(74, 222, 128, 0.5);
    color: #166534;
}

.alert-icon {
    font-size: 1.4rem;
    color: var(--color-danger);
}

.alert-content {
    display: flex;
    flex-direction: column;
    font-size: 0.92rem;
}

/* Footer Section */
.footer {
    padding: 22px 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    font-size: 0.92rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    text-align: center;
    font-size: clamp(0.82rem, 3.2vw, 0.95rem);
    word-break: keep-all;
}

.line-icon {
    color: #06c755;
    font-size: 1.15rem;
}

.footer-bottom {
    text-align: center;
    border-top: var(--glass-border-subtle);
    padding-top: 12px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

/* Modal Popup */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.25s ease-out;
}

.glass-modal {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 1);
    box-shadow: var(--glass-shadow-lg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 720px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalPop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    padding: 20px 26px;
    border-bottom: var(--glass-border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.6);
}

.student-profile-badge {
    display: flex;
    align-items: center;
    gap: 14px;
}

.avatar-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #0891b2);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 6px 16px rgba(8, 145, 178, 0.3);
}

.student-name {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.student-details {
    display: flex;
    gap: 8px;
    margin-top: 4px;
    flex-wrap: wrap;
}

.pill-badge {
    font-size: 0.8rem;
    background: rgba(241, 245, 249, 0.95);
    border: 1px solid rgba(203, 213, 225, 0.8);
    padding: 3px 12px;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
}

.btn-close-modal {
    background: rgba(241, 245, 249, 0.9);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-close-modal:hover {
    background: var(--color-danger);
    color: #ffffff;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 2px solid rgba(226, 232, 240, 0.8);
    padding-bottom: 8px;
}

/* Scores Grid */
.scores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 14px;
}

.score-item-card {
    border-radius: var(--radius-md);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
    backdrop-filter: blur(8px);
}

.score-item-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

/* Basic Subjects Theme (Soft Sky Blue) */
.score-item-card.basic-card {
    background: linear-gradient(135deg, rgba(239, 246, 255, 0.92), rgba(255, 255, 255, 0.95));
    border: 1.5px solid rgba(147, 197, 253, 0.8);
}

.score-item-card.basic-card:hover {
    border-color: rgba(59, 130, 246, 0.9);
}

.score-item-card.basic-card .subject-icon {
    color: #2563eb;
}

.score-item-card.basic-card .score-item-value {
    color: #1d4ed8;
}

.score-item-card.basic-card .score-bar-fill {
    background: linear-gradient(90deg, #2563eb, #0284c7);
}

/* Additional/Elective Subjects Theme (Soft Violet/Purple) */
.score-item-card.elective-card {
    background: linear-gradient(135deg, rgba(245, 243, 255, 0.92), rgba(255, 255, 255, 0.95));
    border: 1.5px solid rgba(216, 180, 254, 0.8);
}

.score-item-card.elective-card:hover {
    border-color: rgba(168, 85, 247, 0.9);
}

.score-item-card.elective-card .subject-icon {
    color: #7c3aed;
}

.score-item-card.elective-card .score-item-value {
    color: #6d28d9;
}

.score-item-card.elective-card .score-bar-fill {
    background: linear-gradient(90deg, #7c3aed, #d946ef);
}

.score-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}

.score-item-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.title-with-badge {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    gap: 6px;
}

.subject-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    width: fit-content;
}

.subject-tag.basic {
    background: rgba(37, 99, 235, 0.12);
    color: #1d4ed8;
    border: 1px solid rgba(37, 99, 235, 0.25);
}

.subject-tag.elective {
    background: rgba(124, 58, 237, 0.12);
    color: #6d28d9;
    border: 1px solid rgba(124, 58, 237, 0.25);
}

.score-item-value {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
}

.score-bar-bg {
    width: 100%;
    height: 7px;
    background: rgba(226, 232, 240, 0.85);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.6s ease-out;
}

.modal-footer {
    padding: 16px 26px;
    border-top: var(--glass-border-subtle);
    background: rgba(255, 255, 255, 0.6);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.btn-close-primary {
    width: 100%;
    max-width: 240px;
    background: linear-gradient(135deg, #0f172a, #334155);
}

/* Teacher Admin Modals */
.admin-modal-card {
    max-width: 480px;
}

.admin-dashboard-card {
    max-width: 640px;
}

.admin-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-header-title h2 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.admin-icon {
    font-size: 1.3rem;
    color: var(--color-primary);
}

.admin-intro-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.admin-status-box {
    background: rgba(241, 245, 249, 0.8);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 16px;
}

.current-url-display {
    font-family: monospace;
    font-size: 0.82rem;
    color: var(--color-primary);
    word-break: break-all;
    background: #ffffff;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(203, 213, 225, 0.8);
    margin-top: 6px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-dark);
}

textarea#newSheetUrlInput {
    width: 100%;
    padding: 12px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    border: 1.5px solid rgba(203, 213, 225, 0.9);
    background: rgba(255, 255, 255, 0.95);
    outline: none;
    resize: vertical;
    transition: border-color 0.2s;
}

textarea#newSheetUrlInput:focus {
    border-color: var(--color-primary);
}

.url-instructions {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 8px;
}

.admin-modal-actions, .admin-dashboard-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.btn-primary-action {
    width: 100%;
}

.btn-success-action {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
    flex: 1;
}

.btn-success-action:hover {
    background: linear-gradient(135deg, #059669, #047857);
}

.btn-reset-action {
    background: rgba(241, 245, 249, 0.9);
    color: var(--color-text-dark);
    box-shadow: none;
    border: 1px solid rgba(203, 213, 225, 0.8);
}

.btn-reset-action:hover {
    background: #e2e8f0;
}

.btn-logout-action {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
    font-size: 0.95rem;
    padding: 10px 20px;
    min-height: 44px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner-glass {
    background: rgba(255, 255, 255, 0.95);
    padding: 24px 36px;
    border-radius: var(--radius-md);
    box-shadow: var(--glass-shadow-lg);
    border: var(--glass-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    font-weight: 500;
    color: var(--color-text-dark);
}

.spinner {
    width: 42px;
    height: 42px;
    border: 4px solid rgba(37, 99, 235, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (min-width: 641px) and (max-width: 1100px) {
    .app-container {
        width: 94%;
        margin: 20px auto;
        gap: 18px;
    }

    .search-card {
        padding: 36px 28px;
    }

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

    .modal-card {
        max-width: 90%;
        max-height: 85vh;
    }
}

@media (max-width: 640px) {
    .app-container {
        width: 95%;
        margin: 12px auto;
        gap: 14px;
    }

    .navbar {
        padding: 16px 18px;
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
    }

    .brand {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .school-logo-img {
        height: 56px;
    }

    .app-title {
        font-size: 1.05rem;
        word-break: keep-all;
    }

    .school-name {
        font-size: 0.82rem;
    }

    .header-right {
        width: 100%;
        justify-content: center;
    }

    .search-card {
        padding: 26px 16px;
        gap: 14px;
    }

    .hero-title {
        font-size: 1.35rem;
        line-height: 1.35;
        word-break: keep-all;
        text-wrap: balance;
    }

    .hero-subtitle {
        font-size: clamp(0.78rem, 3.8vw, 0.92rem);
        line-height: 1.45;
    }

    .hero-subtitle .sub-line {
        display: block;
        white-space: nowrap;
    }

    .mobile-break {
        display: inline;
    }

    .input-group input {
        font-size: 1rem;
        padding-left: 48px;
        min-height: 50px;
    }

    .btn-close-primary {
        max-width: 100%;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 10px;
    }

    .contact-info {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        text-align: center;
        gap: 8px;
        font-size: 0.88rem;
        word-break: keep-all;
    }

    .contact-info .line-icon {
        font-size: 1.2rem;
        margin-bottom: 0;
    }

    .scores-grid {
        grid-template-columns: 1fr;
    }

    .modal-overlay {
        padding: 12px;
        align-items: flex-end;
    }

    .glass-modal {
        max-height: 92vh;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
    }
}

.mobile-break {
    display: none;
}