/* Czech Invoicing Frontend - main.css
 * Loaded on every page. Defines variables, base, buttons, theme toggle.
 * Pure ASCII.
 */

/* ====== Theme variables ====== */

:root,
[data-theme="light"] {
    --cife-bg: #fafafa;
    --cife-bg-elevated: #ffffff;
    --cife-bg-subtle: #f4f4f5;
    --cife-bg-hover: #efeff1;
    --cife-bg-row-alt: #fafafa;

    --cife-border: #e4e4e7;
    --cife-border-strong: #d4d4d8;
    --cife-divider: #f4f4f5;

    --cife-text: #18181b;
    --cife-text-muted: #71717a;
    --cife-text-faint: #a1a1aa;

    --cife-accent: #18181b;
    --cife-accent-text: #fafafa;
    --cife-accent-hover: #27272a;

    --cife-danger: #b91c1c;
    --cife-danger-bg: #fef2f2;
    --cife-danger-border: #fecaca;

    --cife-success: #15803d;
    --cife-success-bg: #f0fdf4;
    --cife-success-border: #bbf7d0;

    --cife-warning: #a16207;
    --cife-warning-bg: #fefce8;
    --cife-warning-border: #fde68a;

    --cife-focus-ring: #18181b;

    --cife-shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --cife-shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --cife-shadow-lg: 0 8px 32px rgba(0,0,0,0.10);

    --cife-radius: 8px;
    --cife-radius-lg: 12px;

    color-scheme: light;
}

[data-theme="dark"] {
    --cife-bg: #0a0a0a;
    --cife-bg-elevated: #161616;
    --cife-bg-subtle: #1f1f1f;
    --cife-bg-hover: #262626;
    --cife-bg-row-alt: #131313;

    --cife-border: #27272a;
    --cife-border-strong: #3f3f46;
    --cife-divider: #27272a;

    --cife-text: #fafafa;
    --cife-text-muted: #a1a1aa;
    --cife-text-faint: #71717a;

    --cife-accent: #fafafa;
    --cife-accent-text: #18181b;
    --cife-accent-hover: #e4e4e7;

    --cife-danger: #f87171;
    --cife-danger-bg: #2a1414;
    --cife-danger-border: #5b1f1f;

    --cife-success: #4ade80;
    --cife-success-bg: #0f1f14;
    --cife-success-border: #1f4a2e;

    --cife-warning: #fbbf24;
    --cife-warning-bg: #251c0a;
    --cife-warning-border: #4a3a15;

    --cife-focus-ring: #fafafa;

    --cife-shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
    --cife-shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --cife-shadow-lg: 0 8px 32px rgba(0,0,0,0.6);

    color-scheme: dark;
}

/* ====== Reset ====== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 15px;
    line-height: 1.55;
    color: var(--cife-text);
    background: var(--cife-bg);
    min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cife-text); }
button { font: inherit; cursor: pointer; }

/* Smooth theme transitions */
body, .cife-card, .cife-btn, input, select, textarea {
    transition: background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

/* ====== Buttons ====== */

.cife-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--cife-text);
    background: var(--cife-bg-elevated);
    border: 1px solid var(--cife-border);
    border-radius: var(--cife-radius);
    text-decoration: none;
    cursor: pointer;
    line-height: 1.2;
}
.cife-btn:hover { background: var(--cife-bg-hover); border-color: var(--cife-border-strong); }
.cife-btn:focus-visible { outline: 2px solid var(--cife-focus-ring); outline-offset: 2px; }
.cife-btn.primary { background: var(--cife-accent); color: var(--cife-accent-text); border-color: var(--cife-accent); }
.cife-btn.primary:hover { background: var(--cife-accent-hover); border-color: var(--cife-accent-hover); }
.cife-btn.ghost { background: transparent; border-color: transparent; }
.cife-btn.ghost:hover { background: var(--cife-bg-hover); }
.cife-btn-block { width: 100%; }

/* ====== Theme toggle ====== */

.cife-theme-toggle {
    background: transparent;
    border: 1px solid var(--cife-border);
    border-radius: var(--cife-radius);
    width: 40px;
    height: 40px;
    padding: 0;
    cursor: pointer;
    color: var(--cife-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.cife-theme-toggle:hover { background: var(--cife-bg-hover); border-color: var(--cife-border-strong); }
.cife-theme-toggle:focus-visible { outline: 2px solid var(--cife-focus-ring); outline-offset: 2px; }
.cife-theme-toggle .icon-sun, .cife-theme-toggle .icon-moon { display: inline-flex; }
[data-theme="light"] .cife-theme-toggle .icon-moon { display: none; }
[data-theme="dark"]  .cife-theme-toggle .icon-sun  { display: none; }

/* ====== Forms (shared base) ====== */

.cife-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.cife-field label { font-size: 13px; font-weight: 500; color: var(--cife-text-muted); }
.cife-field input[type=text],
.cife-field input[type=email],
.cife-field input[type=password],
.cife-field input[type=tel] {
    font: inherit;
    color: var(--cife-text);
    background: var(--cife-bg-elevated);
    border: 1px solid var(--cife-border);
    border-radius: var(--cife-radius);
    padding: 11px 14px;
    width: 100%;
}
.cife-field input:focus {
    outline: 2px solid var(--cife-focus-ring);
    outline-offset: -1px;
    border-color: var(--cife-text);
}
.cife-field-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}
.cife-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--cife-text-muted);
    cursor: pointer;
}
.cife-checkbox input { accent-color: var(--cife-accent); }
.cife-link {
    color: var(--cife-text-muted);
    text-decoration: none;
    font-size: 14px;
    border-bottom: 1px solid var(--cife-border);
}
.cife-link:hover { color: var(--cife-text); border-color: var(--cife-text); }

/* ====== Alerts ====== */

.cife-alert {
    padding: 12px 16px;
    border-radius: var(--cife-radius);
    margin-bottom: 16px;
    font-size: 14px;
    border: 1px solid;
}
.cife-alert.error {
    background: var(--cife-danger-bg);
    border-color: var(--cife-danger-border);
    color: var(--cife-danger);
}
.cife-alert.success {
    background: var(--cife-success-bg);
    border-color: var(--cife-success-border);
    color: var(--cife-success);
}

/* ====== Generic error pages ====== */

.cife-error {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}
.cife-error-inner {
    text-align: center;
    max-width: 480px;
}
.cife-error-inner h1 {
    font-size: 64px;
    margin: 0 0 16px 0;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--cife-text);
}
.cife-error-inner p {
    color: var(--cife-text-muted);
    font-size: 16px;
    margin-bottom: 24px;
}
.cife-button-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ====== Utility ====== */

.cife-noindex-spacer { padding-top: 24px; }