/* Japrise-ID Main Stylesheet - MOBILE FIRST */

:root {
    --color-primary: #0A2440;
    --color-primary-light: #1B3A5E;
    --color-secondary: #F8F9FA;
    --color-accent: #D4AF37;
    --color-accent-hover: #B59328;
    --color-text: #2C2C2C;
    --color-text-light: #5F6368;
    --color-white: #FFFFFF;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-white);
    font-size: 16px; /* Mobile base size */
}

/* Header - Mobile First */
.navbar {
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.navbar .logo img {
    height: 40px;
}

.navbar nav ul {
    display: flex;
    list-style: none;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.navbar nav a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.navbar nav a:hover {
    color: var(--color-accent);
}

/* Buttons - Mobile Optimized */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    text-align: center;
    width: auto;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

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

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

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

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

/* Hero Section - Mobile First */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: 3rem 1rem;
    text-align: center;
}

.hero h1 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.3;
}

.hero p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.5;
}

/* Container - Mobile First */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Section - Mobile First */
.section {
    padding: 2.5rem 1rem;
}

.section-title {
    text-align: center;
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 2rem;
    font-weight: 700;
    line-height: 1.3;
}

/* Cards - Mobile First (Stack on mobile) */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.card {
    background: var(--color-white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.card h3 {
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.card p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-text-light);
}

/* Form - Mobile Optimized */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-secondary);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
    -webkit-appearance: none;
    appearance: none;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-control.error {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Alert - Mobile Optimized */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer - Mobile First */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 2rem 1rem 1rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer p {
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer img {
    height: 35px;
    margin-bottom: 1rem;
}

/* Tablet (576px and up) */
@media (min-width: 576px) {
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero p {
        font-size: 1.15rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop (768px and up) */
@media (min-width: 768px) {
    body {
        font-size: 17px;
    }
    
    .navbar {
        padding: 1rem 0;
    }
    
    .navbar .container {
        padding: 0 2rem;
    }
    
    .navbar .logo img {
        height: 50px;
    }
    
    .navbar nav ul {
        gap: 2rem;
    }
    
    .navbar nav a {
        font-size: 1rem;
    }
    
    .hero {
        padding: 5rem 2rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        font-size: 1.25rem;
    }
    
    .section {
        padding: 4rem 2rem;
    }
    
    .section-title {
        font-size: 2.5rem;
        margin-bottom: 3rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    
    .card {
        padding: 2rem;
    }
    
    .card h3 {
        font-size: 1.5rem;
    }
    
    .footer {
        padding: 3rem 2rem 1rem;
    }
    
    .footer img {
        height: 40px;
    }
}

/* Large Desktop (1024px and up) */
@media (min-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }
}

/* Touch-friendly targets on mobile */
@media (max-width: 767px) {
    .btn {
        min-height: 44px; /* Apple's recommended touch target */
        display: block;
        width: 100%;
    }
    
    .navbar nav ul {
        width: 100%;
        justify-content: center;
    }
    
    .navbar nav a.btn {
        padding: 0.75rem 1rem;
    }
}