/* Custom CSS Framework for Sana & Joe Enterprise */

:root {
    /* Color System */
    --primary-color: #1a365d;
    --primary-light: #2d4a7c;
    --accent-color: #f59e0b;
    --accent-light: #fbbf24;
    --text-dark: #1f2937;
    --text-light: #f3f4f6;
    --success: #2a7f62;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-800: #343a40;
    
    /* Typography */
    --font-primary: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-heading: 'General Sans', var(--font-primary);
    
    /* Spacing */
    --section-spacing: clamp(3rem, 8vw, 6rem);
    --container-padding: clamp(1rem, 3vw, 2rem);
    
    /* Transitions */
    --transition-fast: 200ms ease-out;
    --transition-smooth: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

.display-4 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lead {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    font-weight: 400;
    opacity: 0.9;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp var(--transition-smooth);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Buttons */
.btn {
    position: relative;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    border-width: 2px;
    border-radius: 0.5rem;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    width: 0;
    height: 100%;
    top: 0;
    left: 0;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
}

.btn:hover::after {
    width: 120%;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.btn-accent {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--text-dark);
}

.btn-accent:hover {
    background-color: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Header */
.navbar-dark {
    background-color: var(--primary-color) !important;
}

/* Sections */
.section-padding {
    padding: var(--section-spacing) 0;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--gray-100) 0%, white 100%);
}

/* Hero section */
.hero-section {
    position: relative;
    overflow: hidden;
    padding: calc(var(--section-spacing) * 1.5) 0;
    background: linear-gradient(135deg, var(--gray-100) 0%, white 100%);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, var(--accent-color) 0%, transparent 70%);
    opacity: 0.1;
}

.hero-image {
    position: relative;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    opacity: 0.1;
    border-radius: 1rem;
    transition: var(--transition-smooth);
}

.hero-image:hover::after {
    opacity: 0.2;
}

/* Skip link */
.visually-hidden-focusable:not(:focus):not(:focus-within) {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.visually-hidden-focusable:focus {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

/* Cards */
.card {
    transition: var(--transition-smooth);
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: 1rem;
    overflow: hidden;
}

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

.service-card {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    background: white;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.card-hover-overlay {
    position: relative;
    overflow: hidden;
}

.card-hover-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
}

.card-hover-overlay:hover::after {
    opacity: 1;
}

/* Footer */
footer {
    background-color: var(--primary-color) !important;
}

footer a {
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Accessibility improvements */
:focus {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* Responsive image handling */
.img-fluid {
    max-width: 100%;
    height: auto;
}