/* Samdle Design System - Apple-inspired Black & White with Teal Accent */

/* Viewport Meta Tag Helper */
@viewport {
    width: device-width;
    initial-scale: 1;
}

:root {
    /* Color System */
    --primary-color: #6BC8CB;
    --primary-hover: #5AB8BB;
    --primary-light: #E8F7F8;
    
    --black: #000000;
    --gray-900: #1D1D1F;
    --gray-800: #333336;
    --gray-700: #48484A;
    --gray-600: #636366;
    --gray-500: #8E8E93;
    --gray-400: #C7C7CC;
    --gray-300: #D1D1D6;
    --gray-200: #E5E5EA;
    --gray-100: #F2F2F7;
    --white: #FFFFFF;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-medium: 300ms ease;
    --transition-slow: 500ms ease;
}

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

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.5;
    color: var(--gray-900);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevent horizontal scroll */
    overflow-x: hidden;
    /* Better touch handling */
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    color: var(--black);
    /* Prevent text overflow */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

h1 { font-size: 48px; letter-spacing: -0.02em; }
h2 { font-size: 36px; letter-spacing: -0.02em; }
h3 { font-size: 28px; letter-spacing: -0.01em; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 18px; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-medium);
    text-decoration: none;
    white-space: nowrap;
    /* Touch-friendly size */
    min-height: 44px;
    /* Better touch feedback */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    touch-action: manipulation;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--gray-900);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--gray-800);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-900);
}

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

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--gray-900);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background-color: var(--white);
    transition: all var(--transition-fast);
    /* Prevent zoom on iOS */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    /* Touch-friendly size */
    min-height: 44px;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(107, 200, 203, 0.1);
}

.form-input::placeholder {
    color: var(--gray-500);
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-medium);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

/* Navigation */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.navbar-brand {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--black);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.navbar-link {
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    /* Prevent overflow */
    width: 100%;
    overflow-x: hidden;
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    font-size: 56px;
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 24px;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Tag/Badge System */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.tag-primary {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.tag-dark {
    background-color: var(--gray-900);
    color: var(--white);
}

.tag-light {
    background-color: var(--gray-100);
    color: var(--gray-700);
}

/* Profile Components */
.profile-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: var(--gray-100);
    margin: 0 auto var(--spacing-lg);
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 24px;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.profile-meta {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

/* Search Component */
.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 16px 24px 16px 56px;
    font-size: 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(107, 200, 203, 0.1);
}

.search-icon {
    position: absolute;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Mobile-First Responsive Utilities */
.hide-mobile { display: none !important; }
.show-mobile { display: block !important; }

@media (min-width: 769px) {
    .hide-mobile { display: block !important; }
    .show-mobile { display: none !important; }
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        /* Adjust spacing for mobile */
        --spacing-xs: 4px;
        --spacing-sm: 8px;
        --spacing-md: 12px;
        --spacing-lg: 16px;
        --spacing-xl: 24px;
        --spacing-xxl: 32px;
    }
    
    h1 { font-size: 32px; }
    h2 { font-size: 24px; }
    h3 { font-size: 20px; }
    h4 { font-size: 18px; }
    h5 { font-size: 16px; }
    h6 { font-size: 14px; }
    
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 18px; }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .navbar-menu {
        display: none;
    }
    
    /* Mobile-optimized containers */
    .container {
        padding: 0 16px;
    }
    
    .container-fluid {
        padding: 0 16px;
    }
    
    /* Touch-friendly buttons */
    .btn {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .btn-small {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    /* Form optimizations */
    .form-input,
    .filter-select,
    select {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Card optimizations */
    .card {
        border-radius: var(--radius-md);
    }
    
    /* Navbar mobile */
    .navbar {
        position: fixed;
        width: 100%;
    }
    
    .navbar-container {
        height: 60px;
    }
    
    /* Add padding to body for fixed navbar */
    body {
        padding-top: 60px;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 28px; }
    h2 { font-size: 22px; }
    h3 { font-size: 18px; }
    
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 16px; }
    
    /* Smaller padding on small screens */
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn {
        font-size: 14px;
        padding: 10px 20px;
    }
}