/* ===================================
   PAPSI AUTO REPAIR SHOP
   Professional Red & White Theme
   =================================== */

:root {
    /* Primary Colors */
    --primary-red: #DC143C;
    --primary-red-dark: #B71C1C;
    --primary-red-light: #FF1744;
    --secondary-red: #E53935;
    
    /* Accent Colors */
    --white: #FFFFFF;
    --off-white: #FAFAFA;
    --light-gray: #F5F5F5;
    --gray: #9E9E9E;
    --dark-gray: #424242;
    --black: #212121;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #DC143C 0%, #B71C1C 100%);
    --gradient-light: linear-gradient(135deg, #FF1744 0%, #DC143C 100%);
    --gradient-overlay: linear-gradient(rgba(220, 20, 60, 0.9), rgba(183, 28, 28, 0.9));
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(220, 20, 60, 0.1);
    --shadow-md: 0 4px 12px rgba(220, 20, 60, 0.15);
    --shadow-lg: 0 10px 30px rgba(220, 20, 60, 0.2);
    --shadow-xl: 0 20px 40px rgba(220, 20, 60, 0.25);
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-xl: 20px;
    --radius-full: 50%;
}

/* ===================================
   GLOBAL STYLES
   =================================== */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--black);
    background: var(--off-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--black);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

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

a:hover {
    color: var(--primary-red-dark);
    text-decoration: underline;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background: var(--primary-red);
    color: var(--white);
    text-decoration: none;
}

.btn-lg {
    padding: 15px 40px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ===================================
   CARDS
   =================================== */

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 25px;
    transition: var(--transition-normal);
    border: 1px solid rgba(220, 20, 60, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 20px 25px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin: -25px -25px 20px -25px;
}

.card-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.card-body {
    padding: 20px 0;
}

/* ===================================
   FORMS
   =================================== */

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--black);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #E0E0E0;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.1);
}

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

/* ===================================
   ALERTS
   =================================== */

.alert {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border-left-color: #4CAF50;
}

.alert-danger {
    background: #FFEBEE;
    color: #C62828;
    border-left-color: #F44336;
}

.alert-warning {
    background: #FFF3E0;
    color: #E65100;
    border-left-color: #FF9800;
}

.alert-info {
    background: #E3F2FD;
    color: #1565C0;
    border-left-color: #2196F3;
}

/* ===================================
   NAVBAR
   =================================== */

.navbar {
    background: var(--white);
    box-shadow: var(--shadow-md);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--primary-red);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-red);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--primary-red-dark);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.navbar-link {
    color: var(--dark-gray);
    font-weight: 600;
    transition: var(--transition-fast);
    text-decoration: none;
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--primary-red);
    text-decoration: none;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 100px 20px 50px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    color: var(--white);
    margin-bottom: 30px;
    opacity: 0.95;
}

/* ===================================
   SECTIONS
   =================================== */

.section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--black);
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================================
   GRID SYSTEM
   =================================== */

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    flex: 1;
    padding: 0 15px;
}

.col-2 { flex: 0 0 50%; max-width: 50%; }
.col-3 { flex: 0 0 33.333%; max-width: 33.333%; }
.col-4 { flex: 0 0 25%; max-width: 25%; }

/* ===================================
   FOOTER
   =================================== */

.footer {
    background: var(--black);
    color: var(--white);
    padding: 40px 20px;
    text-align: center;
    border-top: 3px solid var(--primary-red);
}

.footer p {
    color: var(--white);
    margin: 0;
}

/* ===================================
   UTILITIES
   =================================== */

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

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }

.p-1 { padding: 10px; }
.p-2 { padding: 20px; }
.p-3 { padding: 30px; }
.p-4 { padding: 40px; }

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    
    .navbar-menu {
        flex-direction: column;
        gap: 15px;
    }
    
    .col-2, .col-3, .col-4 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .section {
        padding: 50px 20px;
    }
}

/* ===================================
   LOADING SPINNER
   =================================== */

.spinner {
    border: 3px solid rgba(220, 20, 60, 0.1);
    border-top: 3px solid var(--primary-red);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===================================
   BADGE
   =================================== */

.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

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

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

.badge-success {
    background: #4CAF50;
    color: var(--white);
}

.badge-danger {
    background: #F44336;
    color: var(--white);
}