/* ==========================================
   NEXUS ACADEMY - HOJA DE ESTILOS CUÁNTICA
   ========================================== */

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

:root {
    --bg-primary: #0a0f1d;
    --bg-secondary: #111827;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --accent-blue: #3b82f6;
    --accent-blue-glow: rgba(59, 130, 246, 0.3);
    --accent-green: #10b981;
    --accent-green-glow: rgba(16, 185, 129, 0.2);
    --accent-amber: #f59e0b;
    --accent-amber-glow: rgba(245, 158, 11, 0.2);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-focus: #60a5fa;
    --danger: #ef4444;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.05) 0px, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem;
    overflow-x: hidden;
}

.app-container {
    width: 100%;
    max-width: 1400px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* HEADER */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: #fff;
    box-shadow: 0 8px 20px var(--accent-blue-glow);
}

.logo-text h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.logo-text h1 span {
    color: var(--accent-blue);
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.system-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 30px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
    animation: pulse 2s infinite;
}

.status-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-green);
}

/* DASHBOARD STATS */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
}

.stat-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.stat-icon.amber {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-amber);
}

.stat-info h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

/* MAIN CONTENT GRID */
.main-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* CARDS */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.card-header {
    margin-bottom: 1.5rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header h2 i {
    color: var(--accent-blue);
}

.card-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* FORM STYLES */
.entry-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.input-wrapper input,
.input-wrapper select {
    width: 100%;
    padding: 0.85rem 1rem 0.85rem 2.75rem;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

.input-wrapper select {
    appearance: none;
    cursor: pointer;
}

.input-wrapper input:focus,
.input-wrapper select:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 12px rgba(96, 165, 250, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.input-wrapper input:focus + i,
.input-wrapper select:focus + i {
    color: var(--input-focus);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Custom Status Selector (Radio Buttons) */
.status-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 0.25rem;
}

.status-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.status-option input[type="radio"] {
    display: none;
}

.custom-radio {
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-muted);
    border-radius: 50%;
    display: inline-block;
    position: relative;
    transition: var(--transition-smooth);
}

.custom-radio::after {
    content: '';
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: var(--transition-smooth);
}

.status-option:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Estilos de selección dinámicos */
.option-ontime input[type="radio"]:checked + .custom-radio {
    border-color: var(--accent-green);
}
.option-ontime input[type="radio"]:checked + .custom-radio::after {
    background: var(--accent-green);
    transform: translate(-50%, -50%) scale(1);
}
.option-ontime:has(input[type="radio"]:checked) {
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.05);
}

.option-late input[type="radio"]:checked + .custom-radio {
    border-color: var(--accent-amber);
}
.option-late input[type="radio"]:checked + .custom-radio::after {
    background: var(--accent-amber);
    transform: translate(-50%, -50%) scale(1);
}
.option-late:has(input[type="radio"]:checked) {
    border-color: rgba(245, 158, 11, 0.4);
    background: rgba(245, 158, 11, 0.05);
}

.label-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* SUBMIT BUTTON */
.btn-submit {
    margin-top: 0.5rem;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--accent-blue-glow);
    transition: var(--transition-smooth);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
    filter: brightness(1.1);
}

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

/* DATABASE LIST CARD */
.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    min-width: 280px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 30px;
    color: var(--text-main);
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition-smooth);
}

.search-box input:focus {
    border-color: var(--input-focus);
    background: rgba(255, 255, 255, 0.08);
}

/* TABLE STYLES */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.students-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.students-table th {
    background: rgba(255, 255, 255, 0.02);
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--card-border);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.students-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    vertical-align: middle;
}

.students-table tbody tr {
    transition: var(--transition-smooth);
}

.students-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.01);
}

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

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-main);
}

.name {
    font-weight: 600;
}

.badge-id {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--input-focus);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.8rem;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.ontime {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-badge.late {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-amber);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Action Buttons */
.btn-action {
    background: transparent;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-action.delete {
    color: var(--text-muted);
    border: 1px solid transparent;
}

.btn-action.delete:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
}

.table-footer {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

.table-footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ANIMATIONS */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .main-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .system-status {
        align-self: flex-start;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .list-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .search-box {
        width: 100%;
        min-width: 100%;
    }
}