/**
 * Unified Form System - Chata Čenkovice 97
 * Jednotný systém formulářů pro celý web
 */

/* ========================================
   FORM GROUP - Základní kontejner
   ======================================== */
.form-group {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0rem;           /* Větší mezera uvnitř skupiny */
    margin-bottom: 1.75rem; /* Výrazně větší mezera mezi skupinami */
}

/* Varianta pro inline (label vedle inputu) */
.form-group.inline {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

.form-group.inline .form-label {
    margin-bottom: 0;
    min-width: 150px;
}

/* Full width varianta */
.form-group.full-width {
    width: 100%;
}

/* ========================================
   FORM LABEL - Popisky polí
   ======================================== */
.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-foreground, #2c3e50);
    margin-bottom: 0.25rem; /* Menší mezera pod labelem - KLÍČOVÁ ZMĚNA */
    font-size: 0.9rem;
    line-height: 1.4;
    transition: color 0.2s ease;
}

/* Required indicator */
.form-label.required::after,
.form-label[required]::after {
    content: ' *';
    color: var(--color-error);
    font-weight: 700;
}

/* ========================================
   FORM INPUTS - Vstupní pole
   ======================================== */
.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--color-border-soft, rgba(0, 0, 0, 0.15));
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-surface-soft, rgba(255, 255, 255, 0.8));
    color: var(--color-foreground, #2c3e50);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* Placeholder styling */
.form-input::placeholder,
.form-textarea::placeholder,
.form-select::placeholder {
    color: rgba(44, 62, 80, 0.5);
    font-weight: 400;
}

/* ========================================
   FOCUS STATES
   ======================================== */
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary, #1976d2);
    background: var(--color-surface, #fff);
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.1);
    transform: translateY(-1px);
}

/* Focus visible (keyboard navigation) */
@supports selector(:focus-visible) {
    .form-input:focus-visible,
    .form-textarea:focus-visible,
    .form-select:focus-visible {
        outline: 3px solid var(--color-primary, #1976d2);
        outline-offset: 2px;
    }
}

/* ========================================
   VALIDATION STATES
   ======================================== */

/* Error state */
.form-input.error,
.form-textarea.error,
.form-select.error,
.form-input:invalid:not(:placeholder-shown),
.form-textarea:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
    background: var(--color-error-alpha);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    box-shadow: 0 0 0 4px var(--color-error-alpha);
}

/* Success state */
.form-input.success,
.form-textarea.success,
.form-select.success,
.form-input:valid:not(:placeholder-shown),
.form-textarea:valid:not(:placeholder-shown) {
    border-color: var(--color-success);
    background: var(--color-success-alpha);
}

.form-input.success:focus,
.form-textarea.success:focus,
.form-select.success:focus {
    box-shadow: 0 0 0 4px var(--color-success-alpha);
}

/* ========================================
   VALIDATION MESSAGES - KLÍČOVÁ ÚPRAVA
   ======================================== */
.validation-message {
    font-size: 0.85rem;
    color: #dc3545;
    margin-top: 0.5rem;
    font-weight: 500;
    display: none; /* DEFAULTNĚ SKRYTÉ */
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.4;
}

/* Zobrazit pouze když má třídu .show */
.validation-message.show {
    display: flex;
}

/* Jemná tečka místo vykřičníku */
.validation-message::before {
    content: '●';
    font-size: 0.6rem;
    color: var(--color-error);
    margin-top: 0.35rem;
    flex-shrink: 0;
}

/* Success message varianta */
.validation-message.success {
    color: var(--color-success);
}

.validation-message.success::before {
    content: '✓';
    font-size: 0.9rem;
    color: var(--color-success);
    margin-top: 0.2rem;
}

/* ========================================
   FORM GRID - Layout pro více sloupců
   ======================================== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 2rem;
}

.form-grid.three-columns {
    grid-template-columns: repeat(3, 1fr);
}

.form-grid .form-group.full-width {
    grid-column: 1 / -1;
}

/* ========================================
   FORM SECTIONS - Sekce formuláře
   ======================================== */
.form-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-foreground, #2c3e50);
    margin: 0 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(44, 62, 80, 0.1);
}

/* ========================================
   FORM BUTTONS - Akční tlačítka
   ======================================== */
/* Form buttons - extend .btn-primary from style.css */
.form-button,
.btn-submit {
    /* Pouze specifické úpravy pro formulářová tlačítka */
    width: 100%;
    padding: 1.25rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
}

/* ========================================
   FORM ACTIONS - Skupina tlačítek
   ======================================== */
.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
}

.form-actions .form-button {
    width: auto;
    min-width: 150px;
}

/* ========================================
   CHECKBOX & RADIO - Custom styling
   ======================================== */
.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
}

.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary, #1976d2);
}

/* ========================================
   FORM ROW - Admin forms legacy support
   ======================================== */
.form-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row label {
    min-width: 200px;
    font-weight: 600;
    color: var(--color-foreground, #2c3e50);
}

.form-row input,
.form-row select,
.form-row textarea {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border-soft, rgba(0, 0, 0, 0.15));
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--color-primary, #1976d2);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

/* ========================================
   MESSAGE ALERTS
   ======================================== */
.message {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.message.success {
    background: var(--color-success-alpha);
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.message.error {
    background: var(--color-error-alpha);
    color: var(--color-error);
    border-left: 4px solid var(--color-error);
}

.message.info {
    background: var(--color-info-alpha);
    color: var(--color-info);
    border-left: 4px solid var(--color-info);
}

.message.warning {
    background: var(--color-warning-alpha);
    color: var(--color-warning);
    border-left: 4px solid var(--color-warning);
}

/* ========================================
   DARK MODE SUPPORT
   ======================================== */
/* All colors now use CSS variables with light/dark theme support */
/* See style.css for [data-theme="dark"] definitions */

/* ========================================
   RESPONSIVE - Mobile optimalizace
   ======================================== */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .form-grid.three-columns {
        grid-template-columns: 1fr;
    }

    .form-input,
    .form-textarea,
    .form-select {
        font-size: 16px; /* Prevent zoom on iOS */
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .form-group.inline {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-group.inline .form-label {
        min-width: unset;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .form-button {
        width: 100%;
    }

    .form-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .form-row label {
        min-width: unset;
    }

    /* Form grid and split rows responsive */
    .form-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .form-grid > label {
        text-align: left;
        padding-top: 0;
    }

    .form-row-split {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group {
    animation: fadeInUp 0.3s ease-out;
}

/* ========================================
   UTILITIES
   ======================================== */
.form-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted, #6c757d);
    margin-top: 0.25rem;
    line-height: 1.4;
}

.form-divider {
    height: 1px;
    background: var(--color-border, rgba(0, 0, 0, 0.1));
    margin: 2rem 0;
}