/* DeluluAura - Modern CSS with Native Features */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Professional music studio palette */
    --color-primary: oklch(45% 0.2 280);      /* Deep purple */
    --color-secondary: oklch(35% 0.15 250);    /* Midnight blue */
    --color-accent: oklch(70% 0.15 50);        /* Warm gold */

    --color-dark: oklch(15% 0.02 280);
    --color-light: oklch(98% 0.01 280);
    --color-grey: oklch(50% 0.02 280);

    /* Gradients */
    --gradient-hero: linear-gradient(135deg,
        oklch(25% 0.15 280) 0%,
        oklch(15% 0.1 250) 100%);
    --gradient-glass: linear-gradient(135deg,
        oklch(98% 0.01 280 / 0.1) 0%,
        oklch(98% 0.01 280 / 0.05) 100%);

    /* Spacing using clamp for fluid design */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(0.75rem, 1.5vw, 1rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.5rem, 3vw, 2.5rem);
    --space-xl: clamp(2rem, 4vw, 4rem);
    --space-2xl: clamp(3rem, 6vw, 6rem);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", monospace;

    --font-size-xs: clamp(0.75rem, 1vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 1.2vw, 1rem);
    --font-size-base: clamp(1rem, 1.5vw, 1.125rem);
    --font-size-lg: clamp(1.125rem, 2vw, 1.25rem);
    --font-size-xl: clamp(1.5rem, 3vw, 2rem);
    --font-size-2xl: clamp(2rem, 4vw, 3rem);
    --font-size-3xl: clamp(2.5rem, 5vw, 4rem);

    /* Layout */
    --max-width: 1280px;
    --header-height: 80px;

    /* Animation */
    --transition-fast: 200ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px oklch(0% 0 0 / 0.1);
    --shadow-md: 0 4px 16px oklch(0% 0 0 / 0.15);
    --shadow-lg: 0 8px 32px oklch(0% 0 0 / 0.2);
    --shadow-glow: 0 0 40px oklch(70% 0.2 280 / 0.3);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-full: 50%;
}

/* Dark mode preference */
@media (prefers-color-scheme: dark) {
    :root {
        --color-primary: oklch(65% 0.2 280);
        --color-accent: oklch(80% 0.2 50);
    }
}

/* ============================================
   Reset and Base Styles
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-light);
    background: var(--gradient-hero);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   Container with Container Queries
   ============================================ */
.container {
    container-type: inline-size;
    width: min(100% - 2rem, var(--max-width));
    margin-inline: auto;
    padding-inline: var(--space-md);
}

/* Container query for responsive components */
@container (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@container (min-width: 1024px) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-block-end: var(--space-md);
}

h1 {
    font-size: var(--font-size-3xl);
    background: linear-gradient(135deg, var(--color-light) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

p {
    margin-block-end: var(--space-md);
}

.lead {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

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

a:hover {
    opacity: 0.8;
}

/* ============================================
   Layout Components
   ============================================ */
.section {
    padding-block: var(--space-2xl);
}

.section-dark {
    background: linear-gradient(180deg,
        oklch(10% 0.02 280 / 0.8) 0%,
        oklch(15% 0.02 280 / 0.9) 100%);
    backdrop-filter: blur(10px);
}

.section-title {
    text-align: center;
    margin-block-end: var(--space-xl);
}

/* ============================================
   Grid System using CSS Grid
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-lg);
    grid-auto-flow: dense;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;

    @media (min-width: 768px) {
        grid-template-columns: 1fr 1fr;
    }
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.release-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

/* ============================================
   Glass Morphism Card
   ============================================ */
.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    border: 1px solid oklch(98% 0.01 280 / 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: transform var(--transition-base),
                box-shadow var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Stats Counter
   ============================================ */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-block-start: var(--space-xl);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent, oklch(100% 0 0 / 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 600ms;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-light);
}

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

/* ============================================
   Forms with :has() selector
   ============================================ */
.form-group {
    margin-block-end: var(--space-md);
}

.form-group:has(:focus) {
    --input-border-color: var(--color-accent);
}

.form-group:has(:invalid:not(:placeholder-shown)) {
    --input-border-color: oklch(60% 0.2 30);
}

.form-input {
    width: 100%;
    padding: var(--space-sm);
    font-size: var(--font-size-base);
    background: oklch(0% 0 0 / 0.3);
    border: 2px solid var(--input-border-color, oklch(50% 0.02 280 / 0.3));
    border-radius: var(--radius-sm);
    color: var(--color-light);
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: oklch(0% 0 0 / 0.5);
}

/* ============================================
   Accessibility
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-light);
    padding: var(--space-sm);
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ============================================
   Loading States
   ============================================ */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.skeleton {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    background: linear-gradient(90deg,
        oklch(50% 0.02 280 / 0.1) 25%,
        oklch(50% 0.02 280 / 0.2) 50%,
        oklch(50% 0.02 280 / 0.1) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

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

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* ============================================
   Media Queries (Mobile First)
   ============================================ */
@media (min-width: 768px) {
    :root {
        --header-height: 100px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding-inline: var(--space-lg);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
        color: black;
    }

    .no-print {
        display: none;
    }
}

/* ============================================
   Motion Preferences
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}