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

:root {
    --bg-color: #080809;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: #222;
    --accent-color: #5e5ce6;
    --text-color: #e0e0e0;
    --text-dim: #888;
    --error-color: #ff453a;

    /* Semaphore colors */
    --dot-neutral: #555;
    --dot-studying: #ff9f0a; /* Amarillo */
    --dot-mastered: #34c759; /* Verde */
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Map & Review Status Colors */
    --status-not-started: #555;
    --status-in-progress: #ff9f0a;
    --status-mastered: #34c759;
    --status-reviewed: #98cc43; /* Un verde lima más natural */
    --review-red: #ff453a;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.glass-card {
    animation: fadeIn 0.5s ease forwards;
    background: var(--glass);
    border: 1px solid var(--glass-border);
}

html, body {
    height: 100%;
    background-color: var(--bg-color);
    overflow: hidden; /* Prevent scrollbars on main layout */
}

/* Login Screen */
#login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--bg-color);
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.login-card h2 {
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 10px;
}

#pin-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 15px;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

#pin-input::placeholder {
    color: var(--text-dim);
}

#pin-input:focus {
    border-color: var(--accent-color);
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 500;
}

button:hover {
    background-color: #7a78ed; /* Slightly lighter accent */
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

#error {
    color: var(--error-color);
    font-size: 0.9rem;
}

/* Main Layout */
.sidebar {
    width: 250px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 10px 0 50px rgba(0, 0, 0, 0.8);
    z-index: 1000;
}

.nav-item span {
    font-size: 1.2rem;
}

.sidebar h2 {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.sidebar h2 span {
    color: var(--text-color);
}

.nav-item {
    padding: 12px 15px;
    margin-bottom: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: var(--text-dim);
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-color);
}

.nav-item.active {
    color: var(--accent-color);
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-item.active:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.sidebar button {
    margin-top: auto;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-dim);
    padding: 10px 15px;
    font-size: 0.9rem;
}

.sidebar button:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-color);
    transform: none;
}

.main {
    margin-left: 250px; /* Offset for fixed sidebar */
    padding: 30px;
    height: 100vh;
    overflow-y: auto; /* Allow scrolling for main content */
}

h1 {
    color: var(--text-color);
    font-size: 2.2rem;
    margin-bottom: 30px;
    font-weight: 700;
}

h3 {
    color: var(--text-color);
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.glass-card:hover {
    border-color: var(--accent-color);
    background: rgba(255,255,255,0.05);
    transform: translateY(-2px);
}

.today-stats {
    padding: 15px;
    background: linear-gradient(90deg, rgba(94, 92, 230, 0.2), transparent);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 320px 1fr; /* Countdown pequeño a la izquierda */
    gap: 20px;
}
.rank-item { margin-bottom: 12px; }
.mini-bar { height: 6px; background: #222; border-radius: 3px; margin-top: 5px; overflow: hidden; }
.mini-bar div { height: 100%; background: var(--accent-color); transition: 1s cubic-bezier(0.4, 0, 0.2, 1); }

.widget-countdown {
    background: linear-gradient(135deg, var(--accent-color), #4834d4);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.widget-countdown .value {
    font-size: 3.5rem; /* Tamaño reducido */
    font-weight: 800;
    line-height: 1;
    color: white;
}

.widget-countdown .label {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.7rem;
    opacity: 0.9;
    margin-top: 5px;
    color: white;
}

.widget-quote {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px !important;
}

.quote-content {
    text-align: center;
    position: relative;
}

.quote-icon {
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.3;
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
}

.widget-quote p {
    font-size: 1.25rem;
    line-height: 1.6;
    font-weight: 400;
    color: #fff;
    font-style: italic;
}

.schedule-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.schedule-day {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.schedule-day.active {
    border-color: var(--accent-color);
    background: rgba(94, 92, 230, 0.1);
}

.schedule-day span { color: var(--accent-color); font-weight: 700; }

/* --- Mapa Visual de la PAU --- */
.map-summary {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 30px;
    font-size: 1.1rem;
    font-weight: 500;
}

.map-summary p {
    margin: 0;
}

.map-summary strong {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-right: 5px;
}

.map-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.map-subject {
    padding: 25px;
}

.map-subject h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.map-blocks {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.map-block {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 15px;
    transition: all 0.3s ease;
}

.map-block h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.map-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.map-topic {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    transition: background-color 0.3s ease;
}

/* Map & Review Status Classes */
.status-not-started { background-color: var(--status-not-started); }
.status-in-progress { background-color: var(--status-in-progress); }
.status-mastered { background-color: var(--status-mastered); }
.status-reviewed { background-color: var(--status-reviewed); }

.review-never { background-color: var(--status-not-started); }
.review-green { background-color: var(--status-reviewed); }
.review-yellow { background-color: var(--status-in-progress); }
.review-red { background-color: var(--review-red); }

/* --- Sección de Repasos --- */
.reviews-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.review-item {
    padding: 20px;
    border-left: 5px solid;
}
.review-item.review-green { border-color: var(--status-reviewed); }
.review-item.review-yellow { border-color: var(--status-in-progress); }
.review-item.review-red { border-color: var(--review-red); }
.review-item.review-never { border-color: var(--status-not-started); }

.review-subject-group {
    grid-column: 1 / -1;
    margin-top: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    color: var(--accent-color);
}

.review-item h3 { font-size: 1.3rem; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between;}
.review-item p { font-size: 0.95rem; color: var(--text-dim); margin-bottom: 15px; }
.review-item button { width: 100%; padding: 10px; font-size: 0.9rem; }
.review-item .subject-tag { font-size: 0.7rem; background: rgba(255,255,255,0.1); padding: 4px 8px; border-radius: 5px; color: var(--text-color); }
.no-reviews { text-align: center; color: var(--text-dim); font-size: 1.1rem; grid-column: 1 / -1; }

/* Chart.js specific styling */
canvas {
    max-width: 100%;
}

.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}

/* Topic Rows and Semaphore Dots */
.topic-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    margin-bottom: 8px;
    background: rgba(255,255,255,0.02);
    border-radius: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topic-row:last-child {
    border-bottom: none;
}

.topic-row span {
    font-size: 1.1rem;
    font-weight: 400;
}

.status-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--dot-neutral);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.dot:hover {
    transform: scale(1.1);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.dot.active {
    border-color: var(--text-color);
}

.dot.active.d1 {
    background-color: var(--dot-studying);
    box-shadow: 0 0 15px var(--dot-studying);
}
.dot.active.d2 {
    background-color: var(--dot-mastered);
    box-shadow: 0 0 15px var(--dot-mastered);
}

/* Admin Specifics */
.admin-subject-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.btn-small { padding: 5px 10px; font-size: 0.8rem; }

.admin-block-item {
    background: rgba(0,0,0,0.2);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid #333;
}

.admin-block-row { display: flex; justify-content: space-between; margin-bottom: 10px; }
.delete-link { color: var(--error-color); cursor: pointer; font-size: 0.8rem; }
.admin-topic-input { display: flex; gap: 10px; margin-bottom: 10px; }
.admin-topic-row { display: flex; justify-content: space-between; padding: 5px 0; border-bottom: 1px solid #222; }

/* Admin Section */
.glass-card input[type="text"] {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
    color: var(--text-color);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.glass-card input[type="text"]:focus {
    border-color: var(--accent-color);
}

.glass-card button {
    padding: 10px 18px;
    font-size: 0.95rem;
}

.glass-card .topic-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-card .topic-item:last-child {
    border-bottom: none;
}

.glass-card .topic-item span {
    font-size: 1rem;
}

.glass-card .topic-item .delete-btn {
    color: var(--error-color);
    cursor: pointer;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.glass-card .topic-item .delete-btn:hover {
    color: #ff7066;
}

/* --- Mobile Header Styles --- */
.top-header {
    display: none;
    align-items: center;
    padding: 15px 20px;
    background: rgba(8, 8, 9, 0.8);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1002;
    gap: 15px;
}

.mobile-logo { font-weight: 700; color: var(--accent-color); font-size: 1.2rem; }
.mobile-logo span { color: var(--text-color); }
.top-header button { background: none; border: 1px solid var(--border-color); padding: 5px 12px; cursor: pointer; font-size: 1.2rem; }
.top-header button:hover { background: rgba(255,255,255,0.05); }

/* Chart.js specific overrides for dark theme */
.chartjs-render-monitor {
    background: transparent !important;
}

/* --- Responsive Design (Mobile First / Max-width for adjustments) --- */
@media (max-width: 768px) {
    /* General adjustments */
    html, body {
        overflow-x: hidden; /* Prevent horizontal scroll on small screens */
    }

    .top-header {
        display: flex;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr; /* Stack items vertically on mobile */
    }

    .main {
        margin-left: 0; /* Remove sidebar offset */
        padding: 20px; /* Adjust padding for smaller screens */
    }

    h1 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }

    h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }

    .glass-card {
        padding: 20px;
        margin-bottom: 15px;
    }

    /* Sidebar adjustments for mobile */
    .sidebar {
        width: 100%; /* Full width on mobile */
        position: fixed;
        left: -100%; /* Hide off-screen by default */
        transition: left 0.3s ease-in-out;
        box-shadow: none; /* Remove shadow when hidden */
        border-right: none;
        z-index: 1001; /* Ensure it's above other content when open */
    }

    /* A class to show the sidebar (would be toggled by JS) */
    .sidebar.active {
        left: 0;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5); /* Add shadow when open */
    }

    .sidebar h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .nav-item {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .nav-item span {
        font-size: 1rem;
    }

    /* Dashboard Grid adjustments */
    .dashboard-grid {
        grid-template-columns: 1fr; /* Stack items vertically */
        grid-template-rows: auto;
        gap: 15px;
    }

    .widget-countdown .value {
        font-size: 3rem; /* Smaller font for countdown */
    }

    .widget-quote p {
        font-size: 1rem; /* Smaller quote font */
    }

    .chart-container {
        height: 300px; /* Adjust chart height for mobile */
    }

    /* Topic rows and admin sections */
    .topic-row, .admin-block-row, .admin-topic-row {
        flex-direction: column; /* Stack items in rows */
        align-items: flex-start;
        padding: 10px 0;
    }

    .status-dots {
        margin-top: 10px; /* Add space above dots */
    }

    .admin-topic-input {
        flex-direction: column;
        gap: 8px;
    }

    .admin-topic-input button {
        width: 100%; /* Full width button */
    }

    .reviews-list {
        grid-template-columns: 1fr; /* Stack review items vertically */
    }
}