/**
 * Format Teambox - Base Tokens, Dark Mode & Global Form Resets
 * Barrierefreiheit nach WCAG 2.2 AA / EN 301 549
 * Kontrastverhältnisse mind. 4.5:1 für Normaltext, 3:1 für UI-Elemente
 */

:root {
    /* Farbpalette Dark-First (Format Teambox Theme) */
    --color-bg-canvas: #090e15;
    --color-bg-surface: #0e1620;
    --color-bg-surface-elevated: #131d2a;
    --color-bg-subtle: #172332;
    --color-bg-input: #111a24;

    --color-border: #1f2e40;
    --color-border-subtle: rgba(255, 255, 255, 0.08);
    --color-border-strong: #2f4358;
    --color-border-focus: #2dd4bf;

    --color-text-main: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-dim: #64748b;
    --color-text-inverse: #042017;

    --color-primary: #2dd4bf;
    --color-primary-hover: #14b8a6;
    --color-primary-subtle: rgba(45, 212, 191, 0.12);
    --color-primary-glow: rgba(45, 212, 191, 0.25);

    --color-success: #34d399;
    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-success-border: rgba(16, 185, 129, 0.35);

    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-warning-border: rgba(245, 158, 11, 0.35);

    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.12);
    --color-danger-border: rgba(239, 68, 68, 0.35);

    --color-neutral: #94a3b8;
    --color-focus-ring: #2dd4bf;

    /* Typografie & Spacing (8pt Grid) */
    --font-family-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

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

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 28px -4px rgba(0, 0, 0, 0.45);
}

/* CSS Reset & Grundstile */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 100%;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    background-color: var(--color-bg-canvas);
    color: var(--color-text-main);
    color-scheme: dark;
}

body {
    font-family: var(--font-family-sans);
    background-color: var(--color-bg-canvas);
    color: var(--color-text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Scrollbar-Styling für moderne Browser */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-canvas);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-dim);
}

/* ==========================================================================
   FORMULAR-ELEMENTE (GLOBAL RESETS & STYLING)
   Verhindert das Durchschlagen von hässlichen Browser-Default-Styles!
   ========================================================================== */

fieldset {
    border: none;
    margin: 0;
    padding: 0;
    min-inline-size: min-content;
}

legend {
    display: block;
    width: 100%;
    margin-bottom: var(--space-3);
    padding: 0;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: -0.01em;
}

label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: var(--space-1);
    line-height: 1.4;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="number"],
input[type="tel"],
select,
textarea {
    width: 100%;
    display: block;
    background-color: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.65rem 0.95rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--color-text-main);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    outline: none;
    box-sizing: border-box;
}

/* Mobile Form & Input Optimierung (Verhindert automatisches Hineinzoomen auf iOS Safari bei Fokus) */
@media (max-width: 768px) {
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="url"],
    input[type="number"],
    input[type="tel"],
    select,
    textarea {
        font-size: 16px !important;
    }
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background-color: var(--color-bg-surface-elevated);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder {
    color: var(--color-text-dim);
}

textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}

select {
    appearance: none;
    background-image: url("data:image/svg2+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.85rem center;
    background-size: 14px;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Button Basis & Varianten */
button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.25;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(45, 212, 191, 0.2);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 6px 16px rgba(45, 212, 191, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--color-bg-subtle);
    border-color: var(--color-border);
    color: var(--color-text-main);
}

.btn-secondary:hover {
    background-color: var(--color-bg-surface-elevated);
    border-color: var(--color-border-strong);
}

.btn-danger {
    background-color: var(--color-danger-bg);
    border-color: var(--color-danger-border);
    color: #fca5a5;
}

.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.22);
    border-color: var(--color-danger);
    color: #ffffff;
}

.btn-success {
    background-color: var(--color-success-bg);
    border-color: var(--color-success-border);
    color: #6ee7b7;
}

.btn-success:hover {
    background-color: rgba(16, 185, 129, 0.22);
    border-color: var(--color-success);
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border-color: transparent;
}

.btn-ghost:hover {
    color: var(--color-text-main);
    background-color: var(--color-bg-subtle);
}