/* IWKK.cn Main CSS */

/* 1. Variables & Design System */
:root {
    /* Colors */
    --color-primary: #FF6B00;
    --color-primary-hover: #e05e00;
    --color-secondary: #1E293B;
    --color-bg: #F7F7F7;
    /* Dedao main background */
    --color-card-bg: #FFFFFF;
    --color-text-main: #333333;
    --color-text-muted: #666666;
    --color-border: #E5E7EB;
    --color-success: #10B981;
    --color-error: #EF4444;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease-in-out;
}

/* Dark Mode Variables */
:root[data-theme="dark"] {
    /* Colors */
    --color-primary: #FF6B00;
    --color-primary-hover: #ff8533;
    --color-secondary: #0f172a;
    --color-bg: #0f172a;
    --color-card-bg: #1e293b;
    --color-text-main: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-border: #334155;

    /* Footer Dark */
    --color-footer-bg: #0f172a;
    --color-footer-text: #ffffff;
    --color-footer-link: #cbd5e1;
    --color-footer-link-hover: #ffffff;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .ad-slot {
    background-color: #1e293b;
    border-color: #334155;
    color: #64748b;
}

[data-theme="dark"] .lang-switcher:hover {
    background-color: #334155;
}

/* System Dark Mode (overridden by data-theme="light") */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* Colors */
        --color-primary: #FF6B00;
        --color-primary-hover: #ff8533;
        --color-secondary: #0f172a;
        --color-bg: #0f172a;
        --color-card-bg: #1e293b;
        --color-text-main: #f8fafc;
        --color-text-muted: #94a3b8;
        --color-border: #334155;

        /* Footer Dark System */
        --color-footer-bg: #0f172a;
        --color-footer-text: #ffffff;
        --color-footer-link: #cbd5e1;
        --color-footer-link-hover: #ffffff;

        /* Effects */
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    }

    :root:not([data-theme="light"]) .ad-slot {
        background-color: #1e293b;
        border-color: #334155;
        color: #64748b;
    }

    :root:not([data-theme="light"]) .lang-switcher:hover {
        background-color: #334155;
    }
}

/* 2. Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 3. Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

header {
    background-color: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo span {
    color: var(--color-primary);
}

main {
    min-height: 80vh;
    padding: var(--spacing-xl) 0;
}

footer {
    background-color: var(--color-secondary);
    color: #fff;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    font-size: var(--font-size-sm);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        text-align: left;
    }
}

.footer-links a {
    color: #cbd5e1;
    margin: 0 var(--spacing-sm);
}

.footer-links a:hover {
    color: #fff;
}

/* 4. Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: var(--font-size-base);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.card {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

/* 5. Tool Grid (Homepage) */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.tool-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.tool-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.tool-desc {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    flex-grow: 1;
}

/* 6. Language Switcher */
.lang-switcher {
    position: relative;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.lang-switcher:hover {
    background-color: #f1f5f9;
}

/* 7. AdSense Placeholder */
.ad-slot {
    background-color: #f1f5f9;
    border: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    min-height: 100px;
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-md);
}

/* 8. Global UI Components (Toast & Modal) */
.iwkk-toast-container {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
    /* Allow clicking through container */
}

.iwkk-toast {
    background-color: var(--color-card-bg);
    color: var(--color-text-main);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    pointer-events: auto;
    font-weight: 500;
}

.iwkk-toast i {
    font-size: 1.25rem;
}

.iwkk-toast i.fa-check-circle {
    color: var(--color-success);
}

.iwkk-toast i.fa-times-circle {
    color: var(--color-error);
}

.iwkk-toast i.fa-info-circle {
    color: var(--color-primary);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.iwkk-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.iwkk-modal-overlay.show {
    opacity: 1;
}

.iwkk-modal {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 90%;
    max-width: 400px;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.iwkk-modal-overlay.show .iwkk-modal {
    transform: scale(1);
}

.iwkk-modal-header {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.iwkk-modal-body {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-muted);
}

.iwkk-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}