/* ==========================================================================
   Components — buttons, forms, flash messages, badges
   ========================================================================== */

/* --- Buttons: ghost hairline, fill on hover ------------------------------ */

.btn {
    display: inline-block;
    padding: 0.85rem 2.25rem;
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: 400;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    background: transparent;
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: center;
    transition: color var(--transition-base),
                background var(--transition-base),
                border-color var(--transition-base);
}

.btn:hover {
    color: var(--bg-body);
    background: var(--accent);
    border-color: var(--accent);
}

.btn-primary {
    color: var(--bg-body);
    background: var(--accent);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-bright);
    border-color: var(--accent-bright);
    color: var(--bg-body);
}

.btn-outline {
    /* alias kept for existing templates */
    color: var(--accent);
    background: transparent;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: var(--fs-micro);
}

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

.btn:disabled,
.btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* --- Forms ---------------------------------------------------------------- */

.form-group {
    margin-bottom: var(--sp-6);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6);
}

.form-label,
label {
    display: block;
    font-size: var(--fs-micro);
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: var(--sp-2);
}

.form-control,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 0.8rem 1rem;
    font-family: var(--font-body);
    font-size: var(--fs-body);
    font-weight: 300;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}

.form-control:focus,
input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-control::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

textarea {
    min-height: 8rem;
    resize: vertical;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2329ABE2' stroke-width='1'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.is-invalid,
.form-control.is-invalid {
    border-color: var(--error);
}

.form-error {
    display: block;
    font-size: var(--fs-small);
    color: var(--error);
    margin-top: var(--sp-2);
    letter-spacing: normal;
    text-transform: none;
}

.form-hint {
    font-size: var(--fs-small);
    color: var(--text-muted);
    margin-top: var(--sp-2);
}

/* Checkbox rows (GDPR consent) */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
}

.form-check input[type="checkbox"] {
    width: 1.05rem;
    height: 1.05rem;
    margin-top: 0.3rem;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.form-check label {
    font-size: var(--fs-small);
    font-weight: 300;
    letter-spacing: normal;
    text-transform: none;
    color: var(--text-secondary);
    margin: 0;
}

/* Honeypot — must stay visually hidden but present in DOM */
.hp-field {
    position: absolute !important;
    left: -9999px !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* --- Flash messages -------------------------------------------------------- */

.flash-messages {
    position: fixed;
    top: 5.5rem;
    right: var(--sp-4);
    left: var(--sp-4);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    align-items: flex-end;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.flash {
    pointer-events: auto;
    max-width: 26rem;
    padding: var(--sp-4) var(--sp-6);
    font-size: var(--fs-small);
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-left: 2px solid var(--accent);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    animation: flash-in 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.flash-success { border-left-color: var(--success); }
.flash-error   { border-left-color: var(--error); }
.flash-warning { border-left-color: var(--warning); }
.flash-info    { border-left-color: var(--info); }

@keyframes flash-in {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: none; }
}

/* --- Badges ----------------------------------------------------------------- */

.badge {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    font-size: var(--fs-micro);
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--accent);
}

.badge-warning { color: var(--warning); border-color: rgba(217, 188, 126, 0.4); }
.badge-error   { color: var(--error);   border-color: rgba(217, 142, 126, 0.4); }

/* --- Czech flag (book language marker) -------------------------------------- */

.flag-cz {
    display: inline-block;
    vertical-align: -0.1em;
    margin-right: 0.45rem;
    border-radius: 1px;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

/* --- Back link ---------------------------------------------------------------- */

.back-link {
    display: inline-block;
    font-size: var(--fs-small);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--sp-8);
}

.back-link:hover {
    color: var(--accent);
}