/* 
   Amyouni — Personal Website
   Minimal, Premium, Editorial (Charcoal & Sand Theme)
*/

/* -------------------------------------------------------------
   1. Design System & Custom Properties (Variables)
------------------------------------------------------------- */
:root {
    /* Charcoal & Sand Light Theme Palette */
    --bg-color: #F7F4EF;          /* Warm Sand */
    --text-primary: #1E1F1E;      /* Warm Charcoal */
    --text-muted: #626462;         /* Warm slate/gray */
    --border-color: rgba(30, 31, 30, 0.08);
    --accent-color: #1E1F1E;
    
    /* Layout */
    --container-width: 600px;
    --transition-speed: 0.2s;
    --transition-curve: cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Font rendering */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Dark mode override */
[data-theme="dark"] {
    --bg-color: #141514;          /* Deep Charcoal */
    --text-primary: #F5F2EC;      /* Warm Sand/Cream */
    --text-muted: #9A9C9A;         /* Muted Warm Silver */
    --border-color: rgba(245, 242, 236, 0.08);
    --accent-color: #F5F2EC;
}

/* -------------------------------------------------------------
   2. Reset & Typography Fundamentals
------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    font-size: 1.05rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: background-color var(--transition-speed) var(--transition-curve), 
                color var(--transition-speed) var(--transition-curve);
    min-height: 100vh;
}

/* Layout Container */
.container {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* Main Content */
.main-content {
    text-align: center;
}

.name {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.bio {
    font-size: 1.15rem;
    line-height: 1.5;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.email-link {
    font-size: 1.25rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2px;
    transition: border-color var(--transition-speed), color var(--transition-speed);
}

.email-link:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Theme Toggle Button */
.theme-toggle {
    position: absolute;
    top: 2rem;
    right: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 0.5rem;
    transition: color var(--transition-speed);
}

.theme-toggle:hover {
    color: var(--text-primary);
}

.toggle-icon {
    font-size: 1rem;
}

/* Focus States */
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
}