/* =============================================
 * AVENLO — Global Theme & Base Styles
 * Token-driven base layer. Adapts automatically
 * to [data-theme="dark"|"light"] on <html>.
 *
 * Load order: variables.css → theme.css →
 * responsive.css → bootstrap → page CSS.
 * ============================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
    background-color: var(--bg-app);
    color: var(--text-primary);
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: var(--lh-normal);
    color: var(--text-primary);
    background-color: var(--bg-app);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Headings ---------------------------------- */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-3);
    font-family: var(--font-sans);
    font-weight: var(--fw-semibold);
    line-height: var(--lh-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-md); }
h6 { font-size: var(--fs-base); }

p {
    margin: 0 0 var(--space-3);
    color: var(--text-secondary);
}

/* Links -------------------------------------- */
a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Selection ---------------------------------- */
::selection {
    background-color: var(--primary);
    color: var(--text-inverse);
}

/* Scrollbar ---------------------------------- */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

*::-webkit-scrollbar-thumb {
    background-color: var(--border-default);
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: content-box;
}

*::-webkit-scrollbar-thumb:hover {
    background-color: var(--border-strong);
    background-clip: content-box;
}

/* Focus ring (global) ----------------------- */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus,
[role="button"]:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

button:focus-visible,
[role="button"]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Form controls ----------------------------- */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="tel"],
input[type="url"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
textarea,
select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
    font-size: var(--fs-base);
    color: var(--input-text);
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Dropdowns need a solid surface so the native option list is readable
   (the rule above gives selects a near-transparent --input-bg, which leaves
   the open <option> list unreadable in dark mode on some browsers). */
select {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

select option,
select optgroup {
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

input::placeholder,
textarea::placeholder {
    color: var(--input-placeholder);
    opacity: 1;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    background-color: var(--input-bg-focus);
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 3px var(--primary-soft);
    outline: none;
}

input:disabled,
textarea:disabled,
select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

label {
    display: inline-block;
    margin-bottom: var(--space-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--text-secondary);
}

/* Buttons ----------------------------------- */
.btn,
button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: inherit;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    line-height: 1;
    color: var(--text-primary);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: #fff;
    box-shadow: var(--glow-primary);
}

.btn-secondary {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-default);
}

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

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

.btn-ghost:hover {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-default);
}

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

.btn-danger:hover {
    background-color: #c92f2f;
    color: #fff;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    color: var(--text-secondary);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

/* Cards (token-driven base, may be extended) - */
.card,
.glass-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.glass-card {
    background-color: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-color: var(--glass-border);
}

/* Code / pre -------------------------------- */
code, kbd, samp, pre {
    font-family: var(--font-mono);
    font-size: 0.92em;
}

code {
    padding: 2px 6px;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

pre {
    padding: var(--space-4);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

/* Horizontal rule --------------------------- */
hr {
    border: 0;
    height: 1px;
    background-color: var(--border-default);
    margin: var(--space-5) 0;
}

/* Badges ------------------------------------ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-2);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    border-radius: var(--radius-full);
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
}

.badge-primary { background-color: var(--primary-soft); color: var(--primary); }
.badge-success { background-color: var(--success-soft); color: var(--success); }
.badge-warning { background-color: var(--warning-soft); color: var(--warning); }
.badge-danger  { background-color: var(--danger-soft);  color: var(--danger);  }
.badge-info    { background-color: var(--info-soft);    color: var(--info);    }

/* Theme toggle button (used in navbar + public headers) */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    color: var(--text-secondary);
    background-color: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-default);
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline-block; }

[data-theme="light"] .theme-toggle .icon-sun { display: inline-block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Reduced motion respect -------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
