/* CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables - Design System */
:root {
    /* Primary Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #60a5fa;
    --color-primary-lighter: #93c5fd;

    /* Neutral Colors */
    --color-slate-900: #0f172a;
    --color-slate-800: #1e293b;
    --color-slate-700: #334155;
    --color-slate-600: #475569;
    --color-slate-500: #64748b;
    --color-slate-400: #94a3b8;
    --color-slate-300: #cbd5e1;
    --color-slate-200: #e2e8f0;
    --color-slate-100: #f1f5f9;
    --color-slate-50: #f8fafc;

    /* Accent Colors */
    --color-teal: #0891b2;
    --color-teal-dark: #0e7490;

    /* Semantic Colors */
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-background: #ffffff;
    --color-background-alt: #f8fafc;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 40px;
    --spacing-3xl: 60px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 6px 20px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 2px 8px rgba(37, 99, 235, 0.2);
    --shadow-primary-hover: 0 4px 12px rgba(37, 99, 235, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Typography */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--color-background-alt);
    min-height: 100vh;
    padding: 0;
    line-height: 1.6;
    margin: 0;
    color: var(--color-text-primary);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: 2.5em;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2em;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5em;
}

h4 {
    font-size: 1.25em;
}

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

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

a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Common Layout */
.container {
    background: var(--color-background);
    padding: var(--spacing-2xl);
    max-width: 1400px;
    margin: 0 auto;
}

.section {
    margin-bottom: var(--spacing-xl);
}

/* Common Form Elements */
input, select, textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    background: var(--color-background);
    transition: all var(--transition-base);
    color: var(--color-text-primary);
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--color-background);
}

input:disabled, select:disabled, textarea:disabled {
    background: var(--color-slate-100);
    cursor: not-allowed;
    opacity: 0.6;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 14px;
}

/* Common Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-base);
    font-family: inherit;
    display: inline-block;
    text-align: center;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-primary-hover);
}

.btn-secondary {
    background: var(--color-slate-500);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(100, 116, 139, 0.2);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-slate-600);
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
    display: block;
}

/* Common Cards */
.card {
    background: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-title {
    color: var(--color-text-primary);
    font-size: 1.3em;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

/* Common Grid Layouts */
.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Common Utilities */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-muted);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Common Messages */
.error {
    background: #fee;
    color: #c33;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid #fcc;
}

.success {
    background: #efe;
    color: #373;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid #cec;
}

.warning {
    background: #ffc;
    color: #860;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid #fea;
}

.info {
    background: #eff6ff;
    color: #1e40af;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid #bfdbfe;
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--color-slate-200);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Typography */
@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.75em;
    }

    h3 {
        font-size: 1.3em;
    }

    .container {
        padding: var(--spacing-lg);
    }
}

/* Cookie Consent Banner */
#cookie-consent-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-lg);
    z-index: 9999;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.consent-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.consent-content p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.95em;
    line-height: 1.5;
    flex: 1;
}

.consent-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.consent-content a:hover {
    color: var(--color-primary-dark);
}

.consent-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.consent-buttons .btn {
    white-space: nowrap;
    padding: 10px 20px;
    font-size: 0.9em;
}

@media (max-width: 768px) {
    #cookie-consent-banner {
        padding: var(--spacing-md);
    }

    .consent-content {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }

    .consent-content p {
        text-align: center;
        font-size: 0.9em;
    }

    .consent-buttons {
        flex-direction: column;
        width: 100%;
    }

    .consent-buttons .btn {
        width: 100%;
    }
}