/* ===== Variables CSS ===== */
:root {
    --primary-color: #4A90E2;
    --primary-dark: #357ABD;
    --secondary-color: #50C878;
    --danger-color: #E74C3C;
    --warning-color: #F39C12;
    --dark-bg: #1E1E1E;
    --dark-card: #2D2D2D;
    --light-bg: #F5F7FA;
    --text-primary: #2C3E50;
    --text-secondary: #7F8C8D;
    --border-color: #E1E8ED;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --sidebar-width: 260px;
    --topbar-height: 60px;
}

/* ===== Reset y Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--light-bg);
}

/* ===== Install Banner ===== */
.install-banner {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    z-index: 2000;
}

.install-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 14px;
}

.install-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.install-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
}

@media (max-width: 480px) {
    .install-banner {
        flex-direction: column;
        align-items: stretch;
    }

    .install-actions {
        justify-content: flex-end;
    }
}

/* ===== Login Page ===== */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    padding: 40px 30px 30px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.logo {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    filter: brightness(0) invert(1);
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    font-size: 14px;
    opacity: 0.9;
}

.login-form {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.error-message {
    background: #FFE5E5;
    color: var(--danger-color);
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    border-left: 4px solid var(--danger-color);
}

.success-message {
    background: #E8F8F5;
    color: var(--secondary-color);
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    border-left: 4px solid var(--secondary-color);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--text-secondary);
    color: white;
}

.btn-secondary:hover {
    background: #6C7A89;
}

.btn-success {
    background: var(--secondary-color);
    color: white;
}

.btn-success:hover {
    background: #45B369;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #C0392B;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.login-footer {
    padding: 20px 30px;
    background: var(--light-bg);
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ===== Dashboard Layout ===== */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: var(--transition);
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
}

.sidebar-header h2 {
    font-size: 20px;
    color: var(--primary-color);
}

.user-info {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 10px;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.user-role {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: capitalize;
}

.sidebar-nav {
    flex: 1;
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

.nav-item.active {
    background: rgba(74, 144, 226, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.nav-icon {
    font-size: 20px;
}

.btn-logout {
    margin: 15px;
    justify-content: flex-start;
    background: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.btn-logout:hover {
    background: var(--danger-color);
    color: white;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

.topbar {
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 30px;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
}

#pageTitle {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 15px;
}

.date-display {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 16px;
    background: var(--light-bg);
    border-radius: 8px;
}

.content-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* ===== Cards ===== */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    padding: 25px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    color: var(--text-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ===== Tables ===== */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--light-bg);
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

tr:hover {
    background: var(--light-bg);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: rgba(80, 200, 120, 0.1);
    color: var(--secondary-color);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 22px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--light-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ===== Versiculo Display ===== */
.versiculo-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.versiculo-text {
    font-size: 24px;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.versiculo-ref {
    font-size: 18px;
    font-weight: 600;
    opacity: 0.9;
}

.reflexion-card {
    background: white;
    border-left: 4px solid var(--secondary-color);
}

.question-list {
    list-style: none;
    counter-reset: question-counter;
}

.question-item {
    counter-increment: question-counter;
    margin-bottom: 20px;
}

.question-item::before {
    content: counter(question-counter) ". ";
    font-weight: 700;
    color: var(--primary-color);
}

.answer-input {
    margin-top: 10px;
}

/* ===== Historial ===== */
.historial-item {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.historial-date {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.historial-versiculo {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.historial-ref {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .topbar {
        padding: 0 15px;
    }
    
    #pageTitle {
        font-size: 18px;
    }
    
    .content-area {
        padding: 15px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .versiculo-card {
        padding: 25px;
    }
    
    .versiculo-text {
        font-size: 18px;
    }
    
    .table-container {
        overflow-x: scroll;
    }
}

/* ===== Utilidades ===== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.d-none {
    display: none !important;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 18px;
    margin-bottom: 10px;
}

.empty-state-subtext {
    font-size: 14px;
}