/* ============================================
   BikeLoo - Global Styles
   Modern, Sharp, Clean Design
   ============================================ */

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

:root {
    /* Color Palette */
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --dark: #121212;
    --accent-red: #ff3b30;
    --text-primary: #121212;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --font-roboto: 'Roboto', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-secondary);
    color: var(--text-primary);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

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

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

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #e6342a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

.btn-primary:disabled {
    background-color: #cccccc;
    color: #999999;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-primary:disabled:hover {
    background-color: #cccccc;
    transform: none;
    box-shadow: none;
}

.btn-primary.btn-active {
    background: linear-gradient(135deg, var(--accent-red) 0%, #ff6b60 100%);
    box-shadow: 0 6px 20px rgba(255, 59, 48, 0.35);
}

.btn-primary.btn-active:hover {
    box-shadow: 0 8px 25px rgba(255, 59, 48, 0.45);
}

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

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

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

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

/* Cards */
.card {
    background-color: var(--white);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 6px 20px var(--shadow-hover);
    transform: translateY(-4px);
}

.card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.card-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

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

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-column {
    flex-direction: column;
}

/* Page Header (Universal) */
.page-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 2.75rem 0;
    text-align: center;
    border-bottom: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h60v60H0z" fill="none"/><path d="M30 0v60M0 30h60" stroke="%23dee2e6" stroke-width="0.5"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255,59,48,0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.page-header h1 {
    margin-bottom: 0.6rem;
    position: relative;
    z-index: 1;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--dark);
}

.page-header p {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Section Spacing */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Forms */
input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.1);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    background-color: var(--light-gray);
    color: var(--dark);
}

.badge-primary {
    background-color: var(--accent-red);
    color: var(--white);
}

/* Scroll to Top Button */
#scrollToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--accent-red);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px var(--shadow-hover);
    transition: var(--transition);
    z-index: 1000;
}

#scrollToTop:hover {
    background-color: var(--dark);
    transform: translateY(-3px);
}

/* Loading Animation */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--accent-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 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); }

.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); }

.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }

.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }

/* Responsive Typography */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }
    
    .page-header {
        padding: 2.25rem 0;
    }
    
    .page-header h1 {
        font-size: clamp(1.5rem, 4vw, 2rem);
    }
    
    .page-header p {
        font-size: 0.95rem;
    }
    
    .card-img {
        height: 160px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .page-header {
        padding: 2rem 0;
    }
    
    .page-header h1 {
        font-size: clamp(1.4rem, 5vw, 1.75rem);
        margin-bottom: 0.5rem;
    }
    
    .page-header p {
        font-size: 0.9rem;
        padding: 0 0.5rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
}