/**
 * MEUS SERMÕES - Styles
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* CSS Reset e Variáveis */
:root {
    /* Cores principais */
    --primary-color: #7A1F29; /* Deep, rich premium burgundy */
    --secondary-color: #B5854C; /* Elegant metallic gold */
    --accent-color: #F8F5F1;
    
    /* Cores do sistema */
    --surface-color: #ffffff;
    --background-color: #F4F5F7;
    --text-color: #111827;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    --border-color: #E5E7EB;
    --shadow-color: rgba(0, 0, 0, 0.08);
    
    /* Estados */
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
    
    /* Espaçamentos */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Tipografia */
    --font-family-serif: 'Crimson Pro', serif;
    --font-family-sans: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Bordas */
    --border-radius: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.16);
    
    /* Transições */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --surface-color: #1E232A;
    --background-color: #15191E;
    --text-color: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-muted: #9CA3AF;
    --border-color: #374151;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

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

html {
    font-size: clamp(14px, 2.5vw, 18px);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    padding-top: 70px;
    padding-bottom: 80px;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-serif);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    display: none;
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 150px);
}

.section.active {
    display: block;
}

/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--surface-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: color-mix(in srgb, var(--surface-color) 85%, transparent);
}

.header-logo h1 {
    font-size: clamp(1rem, 3vw, var(--font-size-xl));
    color: var(--primary-color);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.desktop-nav {
    display: none;
    gap: var(--spacing-xs);
}

.desktop-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 30px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-base);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.desktop-nav .nav-link i {
    font-size: var(--font-size-base);
}

.desktop-nav .nav-link:hover,
.desktop-nav .nav-link.active {
    background: color-mix(in srgb, var(--primary-color) 10%, transparent);
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: color-mix(in srgb, var(--surface-color) 100%, transparent);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-icon:hover {
    background: var(--border-color);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: auto;
    background: color-mix(in srgb, var(--surface-color) 85%, transparent);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 10px 10px calc(10px + env(safe-area-inset-bottom, 0));
    border-top: 1px solid color-mix(in srgb, var(--border-color) 50%, transparent);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 16px;
    border-radius: 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: var(--transition-base);
    min-width: 64px;
}

.nav-item i {
    font-size: 20px;
    transition: transform var(--transition-base);
}

.nav-item.active {
    color: var(--primary-color);
    background: color-mix(in srgb, var(--primary-color) 8%, transparent);
}

.nav-item.active i {
    transform: translateY(-2px);
}

.nav-item-fab {
    width: 56px;
    height: 56px;
    background: var(--primary-color);
    border-radius: 50%;
    margin-top: -28px;
    color: white !important;
    box-shadow: var(--shadow-lg);
}

.nav-item-fab i {
    font-size: 24px;
}

.nav-item-fab span {
    display: none;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-base);
    min-height: 44px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, color-mix(in srgb, var(--primary-color) 70%, black) 100%);
    color: white;
    box-shadow: 0 4px 10px color-mix(in srgb, var(--primary-color) 30%, transparent);
}

.btn-primary:hover {
    box-shadow: 0 6px 14px color-mix(in srgb, var(--primary-color) 45%, transparent);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: color-mix(in srgb, var(--border-color) 80%, var(--text-color));
}

.btn-close {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--border-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-close:hover {
    background: var(--error-color);
    color: white;
}

/* Hero Section */
.hero-section {
    position: relative;
    text-align: center;
    padding: 120px 20px 140px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid color-mix(in srgb, var(--secondary-color) 40%, transparent);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 35, 42, 0.95) 0%, rgba(122, 31, 41, 0.85) 100%);
    z-index: 1;
}

[data-theme="dark"] .hero-overlay {
    background: linear-gradient(135deg, rgba(21, 25, 30, 0.98) 0%, rgba(70, 15, 23, 0.9) 100%);
}

.hero-content-relative {
    position: relative;
    z-index: 2;
}

.hero-section h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    line-height: 1.2;
}

.hero-section h2 span {
    color: var(--secondary-color);
    font-style: italic;
    font-weight: 400;
}

.hero-section p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    max-width: 650px;
    margin: 0 auto;
    text-shadow: 0 1px 4px rgba(0,0,0,0.5);
    line-height: 1.6;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    position: relative;
    z-index: 10;
}

.stat-card {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    text-align: center;
    border: 1px solid color-mix(in srgb, var(--primary-color) 15%, transparent);
    transition: var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border-color: color-mix(in srgb, var(--secondary-color) 40%, transparent);
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-family-serif);
    margin-bottom: 5px;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Quick Actions */
.quick-actions {
    margin-bottom: var(--spacing-2xl);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.action-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.action-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.action-card i {
    font-size: 2rem;
    color: var(--primary-color);
}

.action-card span {
    font-weight: 600;
    color: var(--text-color);
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* Search and Filter */
.search-filter {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background: var(--surface-color);
    color: var(--text-color);
    transition: var(--transition-base);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.filter-select {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface-color);
    color: var(--text-color);
    font-size: var(--font-size-base);
    cursor: pointer;
    min-width: 150px;
}

/* Grids */
.sermons-grid,
.illustrations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.sermon-card,
.illustration-card {
    background: var(--surface-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: 1px solid transparent;
}

.sermon-card:hover,
.illustration-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: color-mix(in srgb, var(--primary-color) 30%, transparent);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.card-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-card-action {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--border-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
}

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

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.card-content {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background: var(--surface-color);
    color: var(--text-color);
    transition: var(--transition-base);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
}

.sermon-form,
.illustration-form {
    padding: var(--spacing-lg);
}

/* Timer */
.timer-container {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-2xl);
}

.timer-display {
    margin-bottom: var(--spacing-2xl);
}

.time-display {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-family-serif);
    margin-bottom: var(--spacing-md);
}

.timer-status {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timer-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.btn-timer {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 48px;
}

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

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

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

.btn-timer:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-timer:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.timer-settings {
    margin-bottom: var(--spacing-xl);
}

.timer-settings label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.timer-settings input {
    width: 100px;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    text-align: center;
    font-size: var(--font-size-base);
}

.timer-progress {
    margin-top: var(--spacing-xl);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width var(--transition-base);
    width: 0%;
}

.progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* FAQ */
.faq-section {
    background: var(--surface-color);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-base);
}

.faq-question:hover {
    background: var(--background-color);
}

.faq-icon {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Modo Púlpito */
#pulpit-mode {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--background-color);
    z-index: 10000;
    overflow-y: auto;
    padding-top: 70px;
    padding-bottom: 50px;
}

.pulpit-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--surface-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-md);
    box-shadow: var(--shadow-sm);
    z-index: 10001;
}

.btn-pulpit {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-pulpit:hover {
    background: var(--border-color);
}

.pulpit-tools {
    display: flex;
    gap: var(--spacing-sm);
}

#pulpit-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    font-size: var(--font-size-xl); /* Big default font */
    line-height: 1.8;
}

#pulpit-content h1 {
    font-size: 2.2em;
    color: var(--primary-color);
    margin-bottom: 0.2em;
    line-height: 1.2;
}

#pulpit-content h2 {
    font-size: 1.5em;
    margin-top: 1.5em;
    padding-bottom: 0.5em;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-color);
}

#pulpit-content h3 {
    font-size: 1.3em;
    margin-top: 1.2em;
    color: var(--secondary-color);
}

#pulpit-content p {
    font-size: 1em;
    margin-bottom: 1.2em;
    color: var(--text-color);
}

/* Activity List */
.activity-list {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.activity-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.activity-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Footer */
.app-footer {
    background: var(--surface-color);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

.app-footer p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.b20-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}

.b20-link:hover {
    text-decoration: underline;
    transform: scale(1.05);
}

/* Responsive Design */
@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
    
    .desktop-nav {
        display: flex;
    }
    
    .bottom-nav {
        display: none !important;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .timer-controls {
        flex-wrap: nowrap;
    }
    
    .action-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .sermons-grid,
    .illustrations-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

/* Utility Classes */
.hidden,
[hidden] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.3s ease-out;
}

/* Footer Section Styles */
.app-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-2xl) 0; /* Extra bottom padding for mobile nav */
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-end;
        text-align: left;
        padding-bottom: 0;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

@media (min-width: 768px) {
    .footer-brand {
        align-items: flex-start;
    }
}

.footer-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

.footer-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

@media (min-width: 768px) {
    .footer-links {
        align-items: flex-end;
    }
}

.footer-copyright {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.footer-copyright p {
    margin: 2px 0;
}

.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.footer-copyright a:hover {
    text-decoration: underline;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

.legal-link {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition-base);
}

.legal-link:hover {
    color: var(--primary-color);
}

.legal-separator {
    color: var(--border-color);
}

/* Print Styles */
@media print {
    .app-header,
    .bottom-nav,
    .btn-primary,
    .btn-secondary,
    .timer-controls {
        display: none !important;
    }
    
    body {
        padding: 0;
        background: white;
        color: black;
    }
    
    .section {
        display: block !important;
        page-break-after: always;
    }
}