/* ═══════════════════════════════════════════════════════════════════
   TECH SAAS + MATERIAL DESIGN 3 CSS
   ═══════════════════════════════════════════════════════════════════ */

:root {
    /* SaaS Color System */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --secondary: #10b981;
    --accent: #f59e0b;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    /* Text */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    /* Borders */
    --border-color: #e5e7eb;
    --border-color-hover: #d1d5db;
    
    /* Spacing (8px grid) */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-6: 48px;
    --space-8: 64px;
    
    /* Border Radius (Material 3) */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    
    color-scheme: light;
}

[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --border-color: #374151;
    --border-color-hover: #4b5563;
    color-scheme: dark;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--text-secondary);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

/* Header & Nav */
header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--space-3);
    list-style: none;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: var(--bg-tertiary);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: transform 0.2s ease;
}

.theme-toggle:hover {
    transform: scale(1.05);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: white;
    padding: var(--space-8) 0;
    text-align: center;
}

.hero h1 {
    color: white;
    margin-bottom: var(--space-3);
}

/* Cards */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

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

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

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-3);
}

@media (max-width: 1024px) {
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    .nav-links {
        gap: var(--space-2);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-2);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
    }
    .nav-links.open {
        display: flex;
    }
    .mobile-nav-toggle {
        display: flex;
    }
    .grid {
        grid-template-columns: 1fr;
    }
}

/* Form */
input, textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-primary);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: var(--space-6) 0;
    border-top: 1px solid var(--border-color);
    margin-top: var(--space-8);
}

/* Chart container */
.chart-container {
    background: var(--bg-primary);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

/* Prayer times table */
.prayer-table {
    width: 100%;
    border-collapse: collapse;
}

.prayer-table th, .prayer-table td {
    padding: var(--space-2);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.prayer-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

/* Header nav spacing floor (normalizer): keep the brand and the
   menu separated when the flex container runs out of width. */
header nav, header nav > div { gap: 1rem; flex-wrap: wrap; }
@media (max-width: 1280px) { header nav ul { gap: 1rem; } }

/* Contact Form Styles (audit fix) */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-3);
}

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

.form-status {
    margin-top: var(--space-2);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
}

/* Contact form coverage per audit */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}
.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.form-status {
    font-size: 0.95rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    display: none;
}
.form-status.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}
.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}
[data-theme="dark"] .form-status.success {
    background: #064e3b;
    color: #a7f3d0;
}
[data-theme="dark"] .form-status.error {
    background: #7f1d1d;
    color: #fecaca;
}