/* ==========================================================================
   Kinata Dewa Ariandi — Nordic Slate & Pure Silver Portfolio Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Nordic Slate & Silver Palette */
    --nordic-sky: #38bdf8;
    --nordic-blue: #0284c7;
    --nordic-silver: #e2e8f0;
    --nordic-steel: #94a3b8;
    
    /* Dark Theme (Nordic Midnight Navy & Rich Slate) */
    --bg-dark: #0b0f17;
    --card-dark: #111827;
    --card-hover-dark: #172033;
    --border-dark: rgba(148, 163, 184, 0.14);
    --border-hover-dark: rgba(56, 189, 248, 0.4);
    
    /* Light Theme (Arctic Snow & Cool Slate) */
    --bg-light: #f8fafc;
    --card-light: #ffffff;
    --card-hover-light: #ffffff;
    --border-light: rgba(148, 163, 184, 0.24);
    --border-hover-light: rgba(2, 132, 199, 0.45);
}

/* Base Reset & Typography */
html {
    scroll-behavior: smooth;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: #e2e8f0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

html.light body {
    background-color: var(--bg-light);
    color: #0f172a;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--font-heading);
    letter-spacing: -0.025em;
}

code, pre, .font-mono {
    font-family: var(--font-mono);
}

/* Nordic Subtle Ambient Glow */
.nordic-glow {
    position: absolute;
    width: 650px;
    height: 350px;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(56, 189, 248, 0.07) 0%, rgba(2, 132, 199, 0.03) 50%, transparent 80%);
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

html.light .nordic-glow {
    background: radial-gradient(circle, rgba(2, 132, 199, 0.08) 0%, rgba(56, 189, 248, 0.04) 50%, transparent 80%);
}

/* Minimalist Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 9999px;
}

html.light ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
}

::-webkit-scrollbar-thumb:hover {
    background: #38bdf8;
}

/* Scroll Progress Line */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2.5px;
    background: linear-gradient(90deg, #38bdf8, #0284c7, #e2e8f0);
    z-index: 100;
    transition: width 0.1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Frosted Header */
.elegant-nav {
    background: rgba(11, 15, 23, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-dark);
}

html.light .elegant-nav {
    background: rgba(248, 250, 252, 0.9);
    border-bottom: 1px solid var(--border-light);
}

/* Nordic Cards */
.elegant-card,
.clean-card,
.nordic-card {
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    border-radius: 1.15rem;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.4), inset 0 1px 0 0 rgba(255, 255, 255, 0.06);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

html.light .elegant-card,
html.light .clean-card,
html.light .nordic-card {
    background: var(--card-light);
    border: 1px solid var(--border-light);
    box-shadow: 0 4px 18px -2px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
}

.elegant-card:hover,
.clean-card:hover,
.nordic-card:hover {
    background: var(--card-hover-dark);
    border-color: var(--border-hover-dark);
    transform: translateY(-3px);
    box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.5), 0 0 20px -4px rgba(56, 189, 248, 0.12), inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
}

html.light .elegant-card:hover,
html.light .clean-card:hover,
html.light .nordic-card:hover {
    background: var(--card-hover-light);
    border-color: var(--border-hover-light);
    box-shadow: 0 14px 28px -6px rgba(0, 0, 0, 0.08), 0 0 18px -4px rgba(2, 132, 199, 0.12);
}

/* Pure Silver Tech Tags */
.tech-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    font-size: 0.725rem;
    font-weight: 500;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.04);
    color: #cbd5e1;
    border: 1px solid rgba(148, 163, 184, 0.18);
    transition: all 0.2s ease;
}

html.light .tech-tag {
    background: #f1f5f9;
    color: #334155;
    border-color: #cbd5e1;
}

.tech-tag:hover {
    background: rgba(56, 189, 248, 0.12);
    color: #7dd3fc;
    border-color: rgba(56, 189, 248, 0.35);
}

html.light .tech-tag:hover {
    background: #e0f2fe;
    color: #0369a1;
    border-color: #7dd3fc;
}

/* Active Nav Link */
.nav-link {
    position: relative;
    transition: color 0.2s ease;
}

.nav-link.active {
    color: #38bdf8 !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 20%;
    width: 60%;
    height: 2px;
    background: #38bdf8;
    border-radius: 9999px;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
}

html.light .nav-link.active {
    color: #0284c7 !important;
}

html.light .nav-link.active::after {
    background: #0284c7;
    box-shadow: 0 0 8px rgba(2, 132, 199, 0.3);
}

/* Toast Notification */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 150;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    border-radius: 12px;
    background: rgba(17, 24, 39, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.2);
    color: #f8fafc;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    pointer-events: auto;
    animation: toastIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

html.light .toast {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid #cbd5e1;
    color: #0f172a;
    box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.1);
}

.toast.hiding {
    animation: toastOut 0.2s ease forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(14px) scale(0.97);
    }
}

/* Nordic Primary Button */
.btn-primary-elegant,
.btn-nordic {
    background: linear-gradient(135deg, #0284c7 0%, #1e40af 100%);
    color: #ffffff;
    box-shadow: 0 6px 18px -2px rgba(2, 132, 199, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(56, 189, 248, 0.25);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary-elegant:hover,
.btn-nordic:hover {
    background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
    box-shadow: 0 10px 24px -2px rgba(2, 132, 199, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Section Divider */
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.15), transparent);
}

html.light .section-divider {
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.3), transparent);
}