/**
 * Form Moderno - Stile riutilizzabile
 * Usato da: iscrizione, completa-iscrizione, richiesta, ecc.
 * Basato sullo stile di acquista-giftcard.php
 */

/* ========================================
   VARIABILI (via custom properties)
   ======================================== */
:root {
    --form-primary: #2695da;
    --form-primary-dark: #1a7ab8;
    --form-primary-light: rgba(38, 149, 218, 0.1);
    --form-border: #e0e0e0;
    --form-border-focus: #2695da;
    --form-bg: #f8f9fa;
    --form-card-bg: #fff;
    --form-text: #333;
    --form-text-muted: #666;
    --form-error: #dc3545;
    --form-success: #28a745;
    --form-radius: 10px;
    --form-radius-lg: 16px;
    --form-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --form-transition: all 0.3s ease;
}

/* ========================================
   CONTAINER
   ======================================== */
.form-moderno-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.form-moderno-container.container-stretto {
    max-width: 700px;
}

.form-moderno-container.container-largo {
    max-width: 1000px;
}

/* ========================================
   HEADER
   ======================================== */
.form-moderno-header {
    text-align: center;
    margin-bottom: 40px;
}

.form-moderno-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--form-text);
    margin-bottom: 12px;
}

.form-moderno-header .subtitle {
    font-size: 18px;
    color: var(--form-text-muted);
    margin: 0;
}

/* ========================================
   CARD / SEZIONE
   ======================================== */
.form-moderno-card {
    background: var(--form-card-bg);
    border-radius: var(--form-radius-lg);
    padding: 35px 40px;
    box-shadow: var(--form-shadow);
    margin-bottom: 25px;
}

.form-moderno-card h4,
.form-moderno-card .card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--form-text);
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--form-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-moderno-card h4 i,
.form-moderno-card .card-title i {
    color: var(--form-primary);
    font-size: 18px;
}

/* Card senza bordo titolo */
.form-moderno-card.no-title-border h4,
.form-moderno-card.no-title-border .card-title {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 20px;
}

/* ========================================
   FORM GROUP
   ======================================== */
.form-moderno .form-group {
    margin-bottom: 25px;
}

.form-moderno .row {
    margin-bottom: 5px;
}

.form-moderno .form-group:last-child {
    margin-bottom: 0;
}

.form-moderno label {
    display: block;
    font-weight: 600;
    color: var(--form-text);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-moderno label i {
    color: var(--form-primary);
    margin-right: 8px;
}

.form-moderno label small,
.form-moderno label .required {
    color: var(--form-error);
    font-weight: normal;
}

/* ========================================
   INPUTS
   ======================================== */
.form-moderno .form-control {
    display: block;
    width: 100%;
    height: 48px;
    padding: 12px 16px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--form-text);
    background-color: var(--form-card-bg);
    border: 2px solid var(--form-border);
    border-radius: var(--form-radius);
    transition: var(--form-transition);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-sizing: border-box;
}

.form-moderno .form-control:focus {
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 3px var(--form-primary-light);
    outline: none;
}

.form-moderno .form-control::placeholder {
    color: #aaa;
}

/* Select */
.form-moderno select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 45px;
    cursor: pointer;
}

/* Textarea */
.form-moderno textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Date input */
.form-moderno input[type="date"].form-control {
    line-height: 1.2;
}

/* File input */
.form-moderno input[type="file"].form-control {
    padding: 12px 16px;
}

/* ========================================
   VALIDATION STATES
   ======================================== */
.form-moderno .form-control.is-invalid {
    border-color: var(--form-error);
}

.form-moderno .form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
}

.form-moderno .form-control.is-valid {
    border-color: var(--form-success);
}

.form-moderno .invalid-feedback,
.form-moderno .field-error {
    display: block;
    color: var(--form-error);
    font-size: 13px;
    margin-top: 6px;
}

.form-moderno .invalid-feedback i {
    margin-right: 5px;
}

/* ========================================
   SUBMIT BUTTON
   ======================================== */
.form-moderno .btn-submit,
.btn-form-moderno {
    display: block;
    width: 100%;
    padding: 16px 30px;
    font-size: 17px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #fff;
    background: var(--form-primary);
    border: none;
    border-radius: var(--form-radius);
    cursor: pointer;
    transition: var(--form-transition);
    margin-top: 10px;
}

.form-moderno .btn-submit:hover,
.btn-form-moderno:hover {
    background: var(--form-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(38, 149, 218, 0.35);
}

.form-moderno .btn-submit:active,
.btn-form-moderno:active {
    transform: translateY(0);
}

.form-moderno .btn-submit:disabled,
.btn-form-moderno:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.form-moderno .btn-submit i,
.btn-form-moderno i {
    margin-right: 10px;
}

/* Loading state */
.form-moderno .btn-submit.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.form-moderno .btn-submit.loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: btn-spinner 0.8s linear infinite;
}

@keyframes btn-spinner {
    to { transform: rotate(360deg); }
}

/* ========================================
   DATA BOX (riepilogo dati utente)
   ======================================== */
.form-moderno .data-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-moderno .data-box .data-col {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-moderno .data-box .data-item {
    font-size: 14px;
    color: #374151;
    line-height: 1.4;
}

.form-moderno .data-box .data-item i {
    color: var(--form-primary);
    width: 16px;
    margin-right: 8px;
}

.form-moderno .data-box .data-item i + i {
    margin-left: 16px;
}

/* ========================================
   UPLOAD AREA
   ======================================== */
.form-moderno .upload-area {
    border: 2px dashed var(--form-border);
    border-radius: var(--form-radius);
    padding: 40px 30px;
    text-align: center;
    background: var(--form-bg);
    cursor: pointer;
    transition: var(--form-transition);
}

.form-moderno .upload-area:hover {
    border-color: var(--form-primary);
    background: var(--form-primary-light);
}

.form-moderno .upload-area.dragover {
    border-color: var(--form-primary);
    background: var(--form-primary-light);
}

.form-moderno .upload-area i {
    font-size: 48px;
    color: #aaa;
    margin-bottom: 15px;
    display: block;
}

.form-moderno .upload-area p {
    margin: 0 0 5px 0;
    color: var(--form-text-muted);
}

.form-moderno .upload-area.has-file {
    border-color: var(--form-success);
    background: rgba(40, 167, 69, 0.1);
}

.form-moderno .upload-area.has-file i {
    color: var(--form-success);
}

.form-moderno .upload-area .file-name {
    margin-top: 12px;
    font-weight: 600;
    color: var(--form-success);
}

/* ========================================
   HELPER TEXT
   ======================================== */
.form-moderno .help-text,
.form-moderno .text-muted.small {
    font-size: 13px;
    color: var(--form-text-muted);
    margin-top: 6px;
}

/* ========================================
   ROW SPACING
   ======================================== */
.form-moderno .row {
    margin-left: -12px;
    margin-right: -12px;
}

.form-moderno .row > [class*="col-"] {
    padding-left: 12px;
    padding-right: 12px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 991px) {
    .form-moderno-header h1 {
        font-size: 28px;
    }
}

@media (max-width: 767px) {
    .form-moderno-container {
        padding: 25px 15px;
    }

    .form-moderno-header h1 {
        font-size: 24px;
    }

    .form-moderno-header .subtitle {
        font-size: 16px;
    }

    .form-moderno-card {
        padding: 25px 20px;
        border-radius: 12px;
    }

    .form-moderno-card h4 {
        font-size: 18px;
    }

    .form-moderno .form-control {
        padding: 12px 14px;
        font-size: 16px; /* Previene zoom su iOS */
    }

    .form-moderno .btn-submit {
        padding: 14px 25px;
        font-size: 16px;
    }

    .form-moderno .data-box {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-moderno .data-box .data-item {
        font-size: 13px;
    }

    .form-moderno .upload-area {
        padding: 30px 20px;
    }

    .form-moderno .upload-area i {
        font-size: 36px;
    }
}

/* ========================================
   ERROR TOAST
   ======================================== */
.form-error-toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: #dc3545;
    color: #fff;
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    box-shadow: 0 4px 20px rgba(220, 53, 69, 0.4);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
}

.form-error-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.form-error-toast i {
    margin-right: 10px;
}