/**
 * Base Styles
 * Variables, reset, typography
 *
 * @package Enravo\Theme
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */

:root {
    /* Colors - Primary */
    --erv-color-primary: #2563eb;
    --erv-color-primary-hover: #1d4ed8;
    --erv-color-primary-light: #dbeafe;

    /* Colors - Secondary */
    --erv-color-secondary: #64748b;
    --erv-color-secondary-hover: #475569;

    /* Colors - Status */
    --erv-color-success: #22c55e;
    --erv-color-success-light: #dcfce7;
    --erv-color-warning: #f59e0b;
    --erv-color-warning-light: #fef3c7;
    --erv-color-error: #ef4444;
    --erv-color-error-light: #fee2e2;
    --erv-color-info: #3b82f6;
    --erv-color-info-light: #dbeafe;

    /* Colors - Neutral */
    --erv-color-text: #1e293b;
    --erv-color-text-muted: #64748b;
    --erv-color-text-light: #94a3b8;
    --erv-color-background: #ffffff;
    --erv-color-surface: #f8fafc;
    --erv-color-border: #e2e8f0;
    --erv-color-border-dark: #cbd5e1;

    /* Typography */
    --erv-font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --erv-font-family-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

    --erv-font-size-xs: 0.75rem;    /* 12px */
    --erv-font-size-sm: 0.875rem;   /* 14px */
    --erv-font-size-base: 1rem;     /* 16px */
    --erv-font-size-lg: 1.125rem;   /* 18px */
    --erv-font-size-xl: 1.25rem;    /* 20px */
    --erv-font-size-2xl: 1.5rem;    /* 24px */
    --erv-font-size-3xl: 1.875rem;  /* 30px */
    --erv-font-size-4xl: 2.25rem;   /* 36px */
    --erv-font-size-5xl: 3rem;      /* 48px */

    --erv-font-weight-normal: 400;
    --erv-font-weight-medium: 500;
    --erv-font-weight-semibold: 600;
    --erv-font-weight-bold: 700;

    --erv-line-height-tight: 1.25;
    --erv-line-height-normal: 1.5;
    --erv-line-height-relaxed: 1.75;

    /* Spacing */
    --erv-spacing-xs: 0.25rem;   /* 4px */
    --erv-spacing-sm: 0.5rem;    /* 8px */
    --erv-spacing-md: 1rem;      /* 16px */
    --erv-spacing-lg: 1.5rem;    /* 24px */
    --erv-spacing-xl: 2rem;      /* 32px */
    --erv-spacing-2xl: 3rem;     /* 48px */
    --erv-spacing-3xl: 4rem;     /* 64px */

    /* Layout */
    --erv-container-width: 1200px;
    --erv-container-padding: var(--erv-spacing-md);
    --erv-header-height: 70px;

    /* Borders */
    --erv-border-radius-sm: 0.25rem;
    --erv-border-radius: 0.5rem;
    --erv-border-radius-lg: 0.75rem;
    --erv-border-radius-xl: 1rem;
    --erv-border-radius-full: 9999px;

    /* Shadows */
    --erv-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --erv-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --erv-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --erv-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --erv-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --erv-transition-fast: 150ms ease;
    --erv-transition: 200ms ease;
    --erv-transition-slow: 300ms ease;

    /* Grid */
    --erv-grid-columns-mobile: 1;
    --erv-grid-columns-tablet: 2;
    --erv-grid-columns-desktop: 4;
    --erv-grid-gap: var(--erv-spacing-lg);

    /* Z-index */
    --erv-z-dropdown: 100;
    --erv-z-sticky: 200;
    --erv-z-fixed: 300;
    --erv-z-modal-backdrop: 400;
    --erv-z-modal: 500;
    --erv-z-tooltip: 600;
}

/* ==========================================================================
   Dark Mode
   Aktif etmek için: html veya body'ye data-theme="dark" ekle
   Örnek: <html data-theme="dark">
   ========================================================================== */

[data-theme="dark"] {
    /* Colors - Primary (aynı kalabilir veya ayarlanabilir) */
    --erv-color-primary: #3b82f6;
    --erv-color-primary-hover: #60a5fa;
    --erv-color-primary-light: #1e3a5f;

    /* Colors - Status */
    --erv-color-success: #22c55e;
    --erv-color-success-light: #14532d;
    --erv-color-warning: #f59e0b;
    --erv-color-warning-light: #451a03;
    --erv-color-error: #ef4444;
    --erv-color-error-light: #450a0a;
    --erv-color-info: #3b82f6;
    --erv-color-info-light: #1e3a5f;

    /* Colors - Neutral (ters çevrildi) */
    --erv-color-text: #f1f5f9;
    --erv-color-text-muted: #94a3b8;
    --erv-color-text-light: #64748b;
    --erv-color-background: #0f172a;
    --erv-color-surface: #1e293b;
    --erv-color-border: #334155;
    --erv-color-border-dark: #475569;

    /* Shadows (daha koyu) */
    --erv-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --erv-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
    --erv-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --erv-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --erv-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   CSS Reset
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
    scroll-behavior: smooth;
}

body {
    font-family: var(--erv-font-family);
    font-size: var(--erv-font-size-base);
    line-height: var(--erv-line-height-normal);
    color: var(--erv-color-text);
    background-color: var(--erv-color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: transparent;
    border: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--erv-font-weight-semibold);
    line-height: var(--erv-line-height-tight);
    color: var(--erv-color-text);
}

h1 {
    font-size: var(--erv-font-size-4xl);
}

h2 {
    font-size: var(--erv-font-size-3xl);
}

h3 {
    font-size: var(--erv-font-size-2xl);
}

h4 {
    font-size: var(--erv-font-size-xl);
}

h5 {
    font-size: var(--erv-font-size-lg);
}

h6 {
    font-size: var(--erv-font-size-base);
}

p {
    margin-bottom: var(--erv-spacing-md);
}

p:last-child {
    margin-bottom: 0;
}

a:hover {
    color: var(--erv-color-primary);
}

strong, b {
    font-weight: var(--erv-font-weight-semibold);
}

small {
    font-size: var(--erv-font-size-sm);
}

code, kbd, pre, samp {
    font-family: var(--erv-font-family-mono);
    font-size: var(--erv-font-size-sm);
}

code {
    background-color: var(--erv-color-surface);
    padding: var(--erv-spacing-xs) var(--erv-spacing-sm);
    border-radius: var(--erv-border-radius-sm);
}

pre {
    background-color: var(--erv-color-surface);
    padding: var(--erv-spacing-md);
    border-radius: var(--erv-border-radius);
    overflow-x: auto;
}

pre code {
    background: none;
    padding: 0;
}

blockquote {
    border-left: 4px solid var(--erv-color-primary);
    padding-left: var(--erv-spacing-md);
    margin: var(--erv-spacing-lg) 0;
    font-style: italic;
    color: var(--erv-color-text-muted);
}

hr {
    border: none;
    border-top: 1px solid var(--erv-color-border);
    margin: var(--erv-spacing-xl) 0;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.screen-reader-text:focus {
    position: fixed;
    top: 5px;
    left: 5px;
    z-index: var(--erv-z-tooltip);
    width: auto;
    height: auto;
    padding: var(--erv-spacing-md);
    background-color: var(--erv-color-background);
    color: var(--erv-color-text);
    font-size: var(--erv-font-size-base);
    clip: auto;
    text-decoration: none;
    box-shadow: var(--erv-shadow-lg);
}

.erv-skip-link {
    position: fixed;
    top: -100%;
    left: var(--erv-spacing-md);
    z-index: var(--erv-z-tooltip);
    padding: var(--erv-spacing-sm) var(--erv-spacing-md);
    background-color: var(--erv-color-primary);
    color: white;
    border-radius: var(--erv-border-radius);
    transition: top var(--erv-transition);
}

.erv-skip-link:focus {
    top: var(--erv-spacing-md);
    outline: 2px solid var(--erv-color-primary);
    outline-offset: 2px;
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--erv-color-primary);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}
