/* ============================================
   B2BIzmir Design System — CSS Custom Properties
   ============================================ */

/* --- Fonts --- */
@font-face {
    font-family: 'Clash Display';
    src: url('/fonts/ClashDisplay-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Clash Display';
    src: url('/fonts/ClashDisplay-Semibold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Clash Display';
    src: url('/fonts/ClashDisplay-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'General Sans';
    src: url('/fonts/GeneralSans-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'General Sans';
    src: url('/fonts/GeneralSans-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'General Sans';
    src: url('/fonts/GeneralSans-Semibold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

/* --- Design Tokens --- */
:root {
    /* Colors — matched from IsimHerYerde variables.css */
    --color-primary: #0ea2bd;
    --color-primary-light: #1ec3e0;
    --color-primary-dark: #0189a1;
    --color-primary-bright: #00d3ff;
    --color-accent: #e07a52;
    --color-accent-hover: #d46a42;
    --color-accent-light: #ec8f6a;
    --color-accent-secondary: #00d3ff;
    --color-surface: #FFFFFF;
    --color-surface-alt: #f7f9fb;
    --color-surface-dark: #1a1f24;
    --color-text: #1a1f24;
    --color-text-muted: #485664;
    --color-text-on-dark: #e4eaf0;
    --color-border: #e4eaf0;
    --color-success: #059652;
    --color-error: #df1529;

    /* Typography */
    --font-display: 'Clash Display', 'Trebuchet MS', sans-serif;
    --font-body: 'General Sans', 'Segoe UI', system-ui, sans-serif;

    /* Type Scale (1.25 ratio) */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.563rem;
    --text-3xl: 1.953rem;
    --text-4xl: 2.441rem;
    --text-5xl: 3.052rem;
    --text-6xl: 3.815rem;

    /* Spacing (8px base) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Layout */
    --max-width-content: 1200px;
    --max-width-text: 720px;
    --max-width-wide: 1400px;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-toast: 500;
}

/* --- Base Styles --- */
body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 400;
    color: var(--color-text);
    background-color: var(--color-surface);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.15;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }

p {
    max-width: var(--max-width-text);
}

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

a:hover {
    color: var(--color-accent-hover);
}

strong {
    font-weight: 600;
}

::selection {
    background-color: var(--color-accent);
    color: white;
}

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

/* Responsive type */
@media (max-width: 768px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }
    h4 { font-size: var(--text-xl); }
}

@media (max-width: 480px) {
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }
    h3 { font-size: var(--text-xl); }
}