/**
 * BIGKAS-AI Student Portal Stylesheet
 * Colorful, kid-friendly, gamified UI
 */

:root {
    --kid-primary: #6C63FF;
    --kid-primary-light: #E8E6FF;
    --kid-secondary: #FF6584;
    --kid-success: #00C897;
    --kid-warning: #FFB830;
    --kid-info: #4ECDC4;
    --kid-orange: #FF8A5C;
    --kid-bg: #F5F3FF;
    --kid-card-bg: #FFFFFF;
    --kid-text: #2D2B55;
    --kid-text-light: #7C7A9C;
    --kid-radius: 20px;
    --kid-radius-sm: 14px;
    --kid-shadow: 0 4px 15px rgba(108, 99, 255, 0.12);
    --kid-shadow-hover: 0 8px 25px rgba(108, 99, 255, 0.2);
    --kid-font: 'Segoe UI', 'Nunito', Tahoma, Geneva, Verdana, sans-serif;
    --bottomnav-height: 70px;
    --topbar-height: 60px;
}

* { box-sizing: border-box; }

body {
    font-family: var(--kid-font);
    background: var(--kid-bg);
    color: var(--kid-text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
}

/* ── Top Bar ── */
.student-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: linear-gradient(135deg, var(--kid-primary), #8B83FF);
    color: #fff;
    z-index: 1000;
    padding: 0 1rem;
    box-shadow: 0 2px 10px rgba(108, 99, 255, 0.3);
}

.student-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fff;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.2rem;
}

.brand-icon { font-size: 1.5rem; }

.streak-pill, .xp-pill {
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    padding: 0.25rem 0.75rem;
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.student-avatar-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: #fff;
}

.student-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
}

/* ── Bottom Navigation ── */
.student-bottomnav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottomnav-height);
    background: #fff;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 15px rgba(0,0,0,0.08);
    z-index: 1000;
    border-radius: 20px 20px 0 0;
}

.bottomnav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--kid-text-light);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.3rem 0.5rem;
    transition: all 0.2s;
    border-radius: 12px;
}

.bottomnav-item i { font-size: 1.4rem; margin-bottom: 2px; }

.bottomnav-item.active {
    color: var(--kid-primary);
    background: var(--kid-primary-light);
    transform: scale(1.05);
}

.bottomnav-item:hover { color: var(--kid-primary); }

/* ── Main Content ── */
.student-main {
    padding-top: calc(var(--topbar-height) + 10px);
    padding-bottom: calc(var(--bottomnav-height) + 10px);
    padding-left: 1rem;
    padding-right: 1rem;
    max-width: 900px;
    margin: 0 auto;
}

/* ── Cards ── */
.kid-card {
    background: var(--kid-card-bg);
    border-radius: var(--kid-radius);
    box-shadow: var(--kid-shadow);
    padding: 1.25rem;
    margin-bottom: 1rem;
    border: none;
    transition: all 0.2s;
}

.kid-card:hover { box-shadow: var(--kid-shadow-hover); }

.kid-card-colored {
    color: #fff;
    border: none;
}

.kid-card-purple { background: linear-gradient(135deg, #6C63FF, #8B83FF); }
.kid-card-pink { background: linear-gradient(135deg, #FF6584, #FF8FA3); }
.kid-card-green { background: linear-gradient(135deg, #00C897, #4ECDC4); }
.kid-card-orange { background: linear-gradient(135deg, #FF8A5C, #FFB830); }
.kid-card-blue { background: linear-gradient(135deg, #4ECDC4, #45B7D1); }

/* ── Streak Banner ── */
.streak-banner {
    background: linear-gradient(135deg, #FF8A5C, #FFB830);
    border-radius: var(--kid-radius);
    padding: 1.25rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.streak-banner .streak-icon {
    font-size: 3rem;
    line-height: 1;
}

.streak-banner .streak-info h3 {
    font-weight: 800;
    font-size: 1.1rem;
    margin: 0;
}

.streak-banner .streak-info p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.85rem;
}

/* ── Action Tiles ── */
.action-tile {
    background: #fff;
    border-radius: var(--kid-radius);
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: var(--kid-shadow);
    transition: all 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: var(--kid-text);
    display: block;
    height: 100%;
}

.action-tile:hover {
    transform: translateY(-4px);
    box-shadow: var(--kid-shadow-hover);
    color: var(--kid-text);
}

.action-tile .tile-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 0.75rem;
}

.action-tile h6 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.action-tile p {
    font-size: 0.75rem;
    color: var(--kid-text-light);
    margin: 0;
}

/* ── Badges ── */
.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.75rem;
}

.badge-item {
    text-align: center;
    padding: 1rem 0.5rem;
    border-radius: var(--kid-radius-sm);
    background: #fff;
    box-shadow: var(--kid-shadow);
    transition: all 0.2s;
}

.badge-item.earned {
    animation: badgePop 0.5s ease-out;
}

.badge-item.locked {
    opacity: 0.4;
    filter: grayscale(1);
}

.badge-item .badge-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.3rem;
}

.badge-item .badge-name {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--kid-text);
    line-height: 1.2;
}

@keyframes badgePop {
    0% { transform: scale(0.5); opacity: 0; }
    60% { transform: scale(1.15); }
    100% { transform: scale(1); opacity: 1; }
}

/* ── Leaderboard ── */
.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--kid-radius-sm);
    margin-bottom: 0.5rem;
    background: #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    transition: all 0.2s;
}

.leaderboard-item.is-me {
    background: var(--kid-primary-light);
    border: 2px solid var(--kid-primary);
}

.leaderboard-item.rank-1 { border-left: 4px solid #FFD700; }
.leaderboard-item.rank-2 { border-left: 4px solid #C0C0C0; }
.leaderboard-item.rank-3 { border-left: 4px solid #CD7F32; }

.leaderboard-rank {
    font-weight: 800;
    font-size: 1.1rem;
    width: 30px;
    text-align: center;
    color: var(--kid-text-light);
}

.leaderboard-item.rank-1 .leaderboard-rank { color: #FFD700; }
.leaderboard-item.rank-2 .leaderboard-rank { color: #C0C0C0; }
.leaderboard-item.rank-3 .leaderboard-rank { color: #CD7F32; }

.leaderboard-name { font-weight: 600; flex: 1; }
.leaderboard-xp { font-weight: 700; color: var(--kid-primary); }

/* ── Flash Cards ── */
.flashcard-container {
    perspective: 1000px;
    width: 100%;
    max-width: 400px;
    height: 250px;
    margin: 0 auto;
}

.flashcard {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flashcard.flipped { transform: rotateY(180deg); }

.flashcard-front, .flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--kid-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-shadow: var(--kid-shadow);
}

.flashcard-front {
    background: linear-gradient(135deg, var(--kid-primary), #8B83FF);
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    cursor: pointer;
}

.flashcard-back {
    background: #fff;
    transform: rotateY(180deg);
    flex-direction: column;
    gap: 1rem;
}

/* ── Progress Ring ── */
.progress-ring {
    width: 80px;
    height: 80px;
    position: relative;
    display: inline-block;
}

.progress-ring svg { transform: rotate(-90deg); }

.progress-ring .progress-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 800;
    font-size: 1.1rem;
}

/* ── Assessment Reading View ── */
.reading-passage {
    background: #fff;
    border-radius: var(--kid-radius);
    padding: 2rem;
    font-size: 1.4rem;
    line-height: 2.2;
    color: #333;
    box-shadow: var(--kid-shadow);
    max-height: 50vh;
    overflow-y: auto;
    border: 3px solid var(--kid-primary-light);
}

.reading-passage .word {
    display: inline;
    padding: 2px 1px;
    border-radius: 4px;
    cursor: default;
    transition: background 0.2s;
}

.reading-passage .word.read {
    background: #d4edda;
    color: #155724;
}

.reading-passage .word.current {
    background: var(--kid-primary);
    color: #fff;
    border-radius: 6px;
    padding: 2px 4px;
    animation: wordPulse 1s infinite;
}

@keyframes wordPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(108, 99, 255, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(108, 99, 255, 0); }
}

.record-btn-student {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    font-size: 2rem;
    border: 4px solid;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    cursor: pointer;
}

.record-btn-student.recording {
    background: var(--kid-secondary);
    border-color: var(--kid-secondary);
    color: #fff;
    animation: pulse-recording 1.5s infinite;
}

@keyframes pulse-recording {
    0% { box-shadow: 0 0 0 0 rgba(255, 101, 132, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(255, 101, 132, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 101, 132, 0); }
}

/* ── Celebration Overlay ── */
.celebration-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.celebration-content {
    text-align: center;
    z-index: 10000;
    animation: celebrationBounce 0.6s ease-out;
}

.celebration-emoji {
    font-size: 5rem;
    animation: celebrationSpin 1s ease-out;
}

.celebration-title {
    color: #fff;
    font-weight: 800;
    font-size: 2rem;
    margin: 0.5rem 0;
}

.celebration-subtitle {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
}

@keyframes celebrationBounce {
    0% { transform: scale(0.3); opacity: 0; }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes celebrationSpin {
    0% { transform: rotate(0deg) scale(0.5); }
    50% { transform: rotate(15deg) scale(1.2); }
    100% { transform: rotate(0deg) scale(1); }
}

/* Confetti */
.confetti-piece {
    position: fixed;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    z-index: 9998;
    animation: confettiFall linear forwards;
}

@keyframes confettiFall {
    0% { opacity: 1; transform: translateY(-10vh) rotate(0deg); }
    100% { opacity: 0; transform: translateY(110vh) rotate(720deg); }
}

/* ── Login Page ── */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--kid-primary) 0%, #8B83FF 50%, var(--kid-secondary) 100%);
    padding: 1rem;
}

.login-card {
    background: #fff;
    border-radius: var(--kid-radius);
    padding: 2.5rem 2rem;
    max-width: 380px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    text-align: center;
}

.login-card h1 {
    font-weight: 800;
    font-size: 1.8rem;
    color: var(--kid-primary);
    margin-bottom: 0.25rem;
}

.pin-input-group {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin: 1.5rem 0;
}

.pin-digit {
    width: 48px;
    height: 56px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    border: 3px solid #dee2e6;
    border-radius: 12px;
    outline: none;
    transition: all 0.2s;
    color: var(--kid-primary);
}

.pin-digit:focus {
    border-color: var(--kid-primary);
    box-shadow: 0 0 0 3px var(--kid-primary-light);
}

.btn-kid {
    border: none;
    border-radius: 14px;
    padding: 0.75rem 2rem;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-kid:hover { transform: translateY(-2px); }
.btn-kid:active { transform: translateY(0); }

.btn-kid-primary {
    background: linear-gradient(135deg, var(--kid-primary), #8B83FF);
    color: #fff;
}

.btn-kid-success {
    background: linear-gradient(135deg, var(--kid-success), #4ECDC4);
    color: #fff;
}

.btn-kid-warning {
    background: linear-gradient(135deg, var(--kid-warning), var(--kid-orange));
    color: #fff;
}

.btn-kid-danger {
    background: linear-gradient(135deg, var(--kid-secondary), #FF8FA3);
    color: #fff;
}

/* ── Activity Card ── */
.activity-card {
    background: #fff;
    border-radius: var(--kid-radius-sm);
    padding: 1rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--kid-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s;
    text-decoration: none;
    color: var(--kid-text);
    border-left: 5px solid var(--kid-primary);
}

.activity-card:hover {
    transform: translateX(4px);
    color: var(--kid-text);
}

.activity-card.completed {
    border-left-color: var(--kid-success);
    opacity: 0.7;
}

.activity-card .activity-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.activity-card .activity-info { flex: 1; }
.activity-card .activity-info h6 { font-weight: 700; margin-bottom: 0.15rem; font-size: 0.9rem; }
.activity-card .activity-info p { font-size: 0.75rem; color: var(--kid-text-light); margin: 0; }

/* ── Student Alert ── */
.student-alert {
    border-radius: var(--kid-radius-sm);
    border: none;
    font-weight: 600;
}

/* ── Responsive ── */
@media (max-width: 576px) {
    .student-main { padding-left: 0.75rem; padding-right: 0.75rem; }
    .reading-passage { font-size: 1.2rem; padding: 1.25rem; line-height: 2; }
    .pin-digit { width: 42px; height: 48px; font-size: 1.3rem; }
    .flashcard-container { height: 200px; }
    .flashcard-front { font-size: 1.5rem; }
}

@media (min-width: 768px) {
    .student-bottomnav { max-width: 500px; left: 50%; transform: translateX(-50%); border-radius: 20px 20px 0 0; }
}

/* ── Print hide ── */
@media print {
    .student-topbar, .student-bottomnav, .celebration-overlay { display: none !important; }
}