/**
 * TAP APP - Base Styles
 * Inspired by The Athletic Presenter brand
 * Clean, professional, trustworthy coaching platform
 */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&display=swap');

/* CSS Variables */
:root {
    /* Brand Colors - Professional Coaching */
    --color-primary: #1e3a5f;       /* Deep navy - trust, authority */
    --color-primary-light: #2d5a8a;
    --color-primary-dark: #152a45;
    --color-accent: #e85a33;        /* Warm coral/orange - energy, action */
    --color-accent-light: #ff6b44;
    --color-accent-dark: #c94a28;

    /* Semantic Colors */
    --color-success: #28a745;
    --color-warning: #f0ad4e;
    --color-danger: #dc3545;
    --color-info: #17a2b8;

    /* Module Colors - Coordinated palette */
    --color-eyes: #1e3a5f;          /* Primary navy */
    --color-voice: #28a745;         /* Green - voice/audio */
    --color-body-energy: #e85a33;   /* Coral - energy */
    --color-visuals: #6f42c1;       /* Purple - creativity */
    --color-general: #17a2b8;       /* Teal - general */
    --color-qa: #fd7e14;            /* Orange - Q&A */

    /* Neutrals */
    --color-bg: #f8f9fa;
    --color-bg-alt: #ffffff;
    --color-surface: #ffffff;
    --color-text: #212529;
    --color-text-light: #6c757d;
    --color-text-muted: #adb5bd;
    --color-border: #dee2e6;
    --color-border-light: #e9ecef;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-full: 50%;

    /* Shadows - Subtle and professional */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.15);

    /* Transitions - Smooth and refined */
    --transition-fast: 0.15s cubic-bezier(0.37, 0, 0.63, 1);
    --transition-normal: 0.25s cubic-bezier(0.37, 0, 0.63, 1);
    --transition-slow: 0.4s cubic-bezier(0.37, 0, 0.63, 1);

    /* Typography */
    --font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

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

.app-header {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    position: relative;
}

.app-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-accent);
}

.app-header h1 {
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: var(--spacing-xs);
}

.app-header p {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-md);
    font-weight: 400;
}

.app-nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-main {
    flex: 1;
    padding: var(--spacing-xl) var(--spacing-lg);
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
}

.app-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    padding: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.app-footer p {
    margin: 0;
}

/* Navigation */
.nav-list {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    list-style: none;
    flex-wrap: wrap;
    max-width: 1100px;
    margin: 0 auto;
}

.nav-item {
    display: flex;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
    -webkit-tap-highlight-color: transparent;
    border: 2px solid transparent;
}

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

.nav-link.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.nav-link .icon {
    font-size: 1.25rem;
    line-height: 1;
}

.nav-link .label {
    font-weight: 600;
}

/* Cards */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border-light);
}

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

.card h3 {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
    box-shadow: 0 2px 8px rgba(232, 90, 51, 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    box-shadow: 0 4px 12px rgba(232, 90, 51, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

/* Module Cards */
.module-card {
    text-align: center;
    cursor: pointer;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-top: 4px solid var(--color-border);
}

.module-card .icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.module-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.module-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.module-card.coming-soon {
    opacity: 0.7;
}

.module-card.coming-soon::after {
    content: 'Coming Soon';
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Page Headers */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
}

.page-header h2 {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    color: var(--color-text-light);
    font-size: var(--font-size-md);
}

/* Error Pages */
.error-page {
    text-align: center;
    padding: var(--spacing-xl);
}

.error-page h1 {
    font-size: 4rem;
    color: var(--color-danger);
    margin-bottom: var(--spacing-md);
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .app-header {
        padding: var(--spacing-md);
    }

    .app-header h1 {
        font-size: var(--font-size-xl);
    }

    .nav-list {
        gap: var(--spacing-xs);
    }

    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .nav-link .label {
        display: none;
    }

    .nav-link .icon {
        font-size: var(--font-size-xl);
    }

    .app-main {
        padding: var(--spacing-md);
    }
}