:root {
    --bg-color: #050505;
    --text-color: #ffffff;
    --text-muted: #9ca3af;
    --nav-hover-color: #d1d5db;
    --card-border-color: #262626;
    --card-hover-border-color: #525252;
    --header-bg: rgba(5, 5, 5, 0.85);
    --bottom-nav-bg: rgba(5, 5, 5, 0.9);
    --border-color: #262626;
    --accent-color: #fff;
}

body.light-mode {
    --bg-color: #f9fafb;
    --text-color: #111827;
    --text-muted: #4b5563;
    --nav-hover-color: #374151;
    --card-border-color: #e5e7eb;
    --card-hover-border-color: #9ca3af;
    --header-bg: rgba(255, 255, 255, 0.85);
    --bottom-nav-bg: rgba(255, 255, 255, 0.9);
    --border-color: #e5e7eb;
    --accent-color: #000;
}

@font-face {
    font-family: 'Yekan Bakh';
    src: url('assets/fonts/YekanBakh-VF.woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
}

.font-serif { font-family: 'Yekan Bakh', sans-serif !important; }
.font-sans { font-family: 'Yekan Bakh', sans-serif !important; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Yekan Bakh', sans-serif;
    transition: background-color 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}

/* Glassmorphism */
.glass-header {
    background-color: var(--header-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

.glass-nav {
    background-color: var(--bottom-nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
    padding-bottom: env(safe-area-inset-bottom);
}

/* Links & Navigation */
.nav-link {
    transition: color 0.3s;
    color: var(--text-color);
}
.nav-link:hover {
    color: var(--text-muted);
}

/* Cards */
.project-card {
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: 1px solid var(--card-border-color);
    border-radius: 20px;
    overflow: hidden;
    background-color: rgba(255,255,255,0.02);
}
body.light-mode .project-card {
    background-color: rgba(0,0,0,0.02);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--card-hover-border-color);
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.1);
}
.project-card img {
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.project-card:hover img {
    transform: scale(1.05);
}

/* Blog Posts */
.post-item {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s;
    padding: 1.5rem 0;
}
.post-item:hover {
    background-color: rgba(255,255,255,0.03);
}
body.light-mode .post-item:hover {
    background-color: rgba(0,0,0,0.03);
}

/* Preloader */
body.is-loading {
    overflow: hidden;
}
#preloader {
    transition: opacity 0.5s 0.5s;
    background-color: var(--bg-color);
    color: var(--text-color);
}
#preloader-text {
    opacity: 0;
}

/* Business/Skill Badges */
.skill-badge {
    background-color: transparent;
    color: var(--text-color);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    border: 1px solid var(--card-border-color);
    transition: all 0.3s;
    font-weight: 500;
}

.skill-badge:hover {
    transform: translateY(-4px);
    border-color: var(--card-hover-border-color);
    background-color: rgba(255,255,255,0.05);
    box-shadow: 0 4px 20px -5px rgba(0,0,0,0.1);
}
body.light-mode .skill-badge:hover {
    background-color: rgba(0,0,0,0.05);
}

/* Inputs */
.form-input {
    background-color: transparent;
    border: 1px solid var(--card-border-color);
    border-radius: 12px;
    padding: 1rem;
    color: var(--text-color);
    transition: border-color 0.3s;
}
.form-input:focus {
    outline: none;
    border-color: var(--text-color);
}

/* Utilities overrides */
.text-gray-300, .text-gray-400, .text-gray-500 { color: var(--text-muted) !important; }
.text-white { color: var(--text-color) !important; }
.bg-black { background-color: var(--bg-color) !important; }