/* =====================================================
   FNAC Reparaciones - Estilos Principales
   Look & feel FNAC: fondo blanco, negro + amarillo FNAC
   Color oficial de marca: #EBB300 (amarillo/dorado FNAC)
   ===================================================== */

:root {
    --fnac-yellow: #EBB300;       /* amarillo oficial FNAC */
    --fnac-yellow-dark: #d1a000;  /* hover */
    --fnac-orange: #EBB300;       /* alias (compatibilidad con clases existentes) */
    --fnac-black: #1a1a1a;
    --fnac-dark: #1a1a1a;         /* texto principal / bandas oscuras */
    --fnac-blue: #327dc2;         /* acento secundario sutil */
    --fnac-magenta: #e4356b;      /* solo para acciones destructivas / errores */
    --fnac-gray: #6c757d;
    --fnac-light: #f6f6f4;        /* fondo general (blanco cálido) */
    --fnac-white: #ffffff;
    --fnac-border: #e6e6e6;
    --fnac-success: #2e9e5b;
    --fnac-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0,0,0,0.04);
    --fnac-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
    --fnac-radius: 6px;
    --fnac-radius-lg: 10px;
    --transition: all 0.2s ease;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Titillium Web', sans-serif;
    font-weight: 400;
    color: var(--fnac-black);
    background-color: var(--fnac-light);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

a {
    text-decoration: none;
    color: var(--fnac-black);
    transition: var(--transition);
}

a:hover {
    color: var(--fnac-yellow-dark);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== HEADER ===== */
.header {
    background: var(--fnac-white);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--fnac-border);
    box-shadow: 0 1px 6px rgba(0,0,0,0.04);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--fnac-black);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo:hover {
    color: var(--fnac-black);
}

.logo-fnac {
    background: var(--fnac-yellow);
    color: var(--fnac-white);
    padding: 4px 12px;
    border-radius: 3px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-separator {
    color: var(--fnac-border);
    font-weight: 300;
}

.logo-text {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--fnac-black);
}

.nav {
    display: flex;
    gap: 4px;
}

.nav-link {
    color: #3a3a3a;
    padding: 10px 16px;
    border-radius: var(--fnac-radius);
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--fnac-black);
    background: #f5f5f3;
}

.nav-link.active {
    color: var(--fnac-black);
    border-bottom-color: var(--fnac-yellow);
    border-radius: var(--fnac-radius) var(--fnac-radius) 0 0;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--fnac-black);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 8px;
}

/* ===== HERO ===== */
.hero {
    background: var(--fnac-white);
    color: var(--fnac-black);
    padding: 80px 0 70px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--fnac-border);
}

.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 60%;
    height: 180%;
    background: radial-gradient(circle, rgba(235,179,0,0.14) 0%, transparent 60%);
    pointer-events: none;
}

.hero h1 {
    font-size: 2.7rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    color: var(--fnac-black);
    letter-spacing: -0.5px;
}

.hero h1 span {
    color: var(--fnac-black);
    background: linear-gradient(transparent 58%, rgba(235,179,0,0.5) 58%);
    padding: 0 4px;
}

.hero p {
    font-size: 1.15rem;
    color: #555;
    max-width: 620px;
    margin: 0 auto 32px;
    position: relative;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--fnac-radius);
    font-family: 'Titillium Web', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: var(--fnac-yellow);
    color: var(--fnac-black);
}

.btn-primary:hover {
    background: var(--fnac-yellow-dark);
    color: var(--fnac-black);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(235,179,0,0.45);
}

/* Secundario: contorno negro sobre fondo claro */
.btn-secondary {
    background: transparent;
    color: var(--fnac-black);
    border-color: var(--fnac-black);
}

.btn-secondary:hover {
    background: var(--fnac-black);
    color: var(--fnac-white);
    transform: translateY(-1px);
}

/* Negro sólido (CTA alternativo estilo FNAC) */
.btn-dark {
    background: var(--fnac-black);
    color: var(--fnac-white);
}

.btn-dark:hover {
    background: #000;
    color: var(--fnac-white);
    transform: translateY(-1px);
}

.btn-magenta {
    background: var(--fnac-magenta);
    color: var(--fnac-white);
}

.btn-magenta:hover {
    background: #c72656;
    color: var(--fnac-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(228,53,107,0.35);
}

.btn-blue {
    background: var(--fnac-blue);
    color: var(--fnac-white);
}

.btn-blue:hover {
    background: #2769a8;
    color: var(--fnac-white);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--fnac-black);
    border-color: var(--fnac-border);
}

.btn-outline:hover {
    background: var(--fnac-black);
    color: var(--fnac-white);
    border-color: var(--fnac-black);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 15px 35px;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
}

/* ===== SECTIONS ===== */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--fnac-black);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.section-title p {
    color: var(--fnac-gray);
    font-size: 1.05rem;
}

.section-title .accent-line {
    width: 56px;
    height: 4px;
    background: var(--fnac-yellow);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* ===== CARDS ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.card {
    background: var(--fnac-white);
    border-radius: var(--fnac-radius-lg);
    padding: 30px;
    box-shadow: var(--fnac-shadow);
    transition: var(--transition);
    border: 1px solid var(--fnac-border);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--fnac-shadow-hover);
    border-color: var(--fnac-yellow);
}

.card-icon {
    width: 58px;
    height: 58px;
    border-radius: var(--fnac-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

/* Los iconos se unifican al negro+amarillo FNAC */
.card-icon.orange,
.card-icon.blue,
.card-icon.magenta {
    background: rgba(235,179,0,0.14);
    color: var(--fnac-yellow-dark);
}

.card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--fnac-black);
}

.card p {
    color: var(--fnac-gray);
    font-size: 0.95rem;
}

/* ===== DEVICE GRID ===== */
.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.device-card {
    background: var(--fnac-white);
    border: 2px solid var(--fnac-border);
    border-radius: var(--fnac-radius-lg);
    padding: 25px 15px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.device-card:hover,
.device-card.selected {
    border-color: var(--fnac-yellow);
    box-shadow: 0 0 0 3px rgba(235,179,0,0.18);
    transform: translateY(-3px);
}

.device-card.selected {
    background: rgba(235,179,0,0.06);
}

.device-card i {
    font-size: 2rem;
    color: var(--fnac-black);
    margin-bottom: 10px;
    display: block;
}

.device-card.selected i {
    color: var(--fnac-yellow-dark);
}

.device-card span {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--fnac-black);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--fnac-black);
    font-size: 0.9rem;
}

.form-group label .required {
    color: var(--fnac-magenta);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--fnac-border);
    border-radius: var(--fnac-radius);
    font-family: 'Titillium Web', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--fnac-white);
    color: var(--fnac-black);
}

.form-control:focus {
    outline: none;
    border-color: var(--fnac-yellow);
    box-shadow: 0 0 0 3px rgba(235,179,0,0.18);
}

.form-control::placeholder {
    color: #adb5bd;
}

select.form-control {
    appearance: none;
    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='%231a1a1a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 3px;
    accent-color: var(--fnac-yellow);
    flex-shrink: 0;
}

.form-check label {
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fnac-gray);
    cursor: pointer;
}

.form-error {
    color: var(--fnac-magenta);
    font-size: 0.8rem;
    margin-top: 5px;
}

/* ===== STEPPER ===== */
.stepper {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    gap: 0;
}

.stepper-step {
    display: flex;
    align-items: center;
    gap: 0;
}

.stepper-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    background: #ededea;
    color: var(--fnac-gray);
    transition: var(--transition);
    flex-shrink: 0;
}

.stepper-step.active .stepper-circle {
    background: var(--fnac-yellow);
    color: var(--fnac-black);
    box-shadow: 0 0 0 4px rgba(235,179,0,0.22);
}

.stepper-step.completed .stepper-circle {
    background: var(--fnac-black);
    color: var(--fnac-white);
}

.stepper-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--fnac-gray);
    position: absolute;
    bottom: -25px;
    white-space: nowrap;
}

.stepper-step.active .stepper-label {
    color: var(--fnac-black);
}

.stepper-line {
    width: 60px;
    height: 3px;
    background: var(--fnac-border);
    margin: 0 5px;
    transition: var(--transition);
}

.stepper-step.completed + .stepper-step .stepper-line,
.stepper-step.completed .stepper-line {
    background: var(--fnac-black);
}

.stepper-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    flex: 1;
}

.stepper-item::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    right: -50%;
    height: 3px;
    background: var(--fnac-border);
}

.stepper-item:last-child::after {
    display: none;
}

.stepper-item.active::after,
.stepper-item.completed::after {
    background: var(--fnac-black);
}

/* ===== WIZARD STEPS ===== */
.wizard-step {
    display: none;
    animation: fadeIn 0.3s ease;
}

.wizard-step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.wizard-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--fnac-border);
}

/* ===== REPAIR OPTIONS ===== */
.repair-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.repair-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    border: 2px solid var(--fnac-border);
    border-radius: var(--fnac-radius);
    cursor: pointer;
    transition: var(--transition);
    background: var(--fnac-white);
}

.repair-option:hover,
.repair-option.selected {
    border-color: var(--fnac-yellow);
    background: rgba(235,179,0,0.05);
}

.repair-option.selected {
    box-shadow: 0 0 0 3px rgba(235,179,0,0.15);
}

.repair-option i {
    font-size: 1.2rem;
    color: var(--fnac-black);
    width: 24px;
    text-align: center;
}

.repair-option span {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Modality cards */
.modality-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 560px;
    margin: 0 auto;
}

.modality-card {
    border: 2px solid var(--fnac-border);
    border-radius: var(--fnac-radius-lg);
    padding: 25px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--fnac-white);
}

.modality-card:hover,
.modality-card.selected {
    border-color: var(--fnac-yellow);
    box-shadow: 0 0 0 3px rgba(235,179,0,0.15);
}

.modality-card.selected {
    background: rgba(235,179,0,0.06);
}

.modality-card i {
    font-size: 2rem;
    color: var(--fnac-black);
    margin-bottom: 12px;
    display: block;
}

.modality-card.selected i {
    color: var(--fnac-yellow-dark);
}

.modality-card h4 {
    font-size: 0.95rem;
    margin-bottom: 5px;
    color: var(--fnac-black);
}

.modality-card p {
    font-size: 0.8rem;
    color: var(--fnac-gray);
}

/* ===== TRACKING ===== */
.tracking-box {
    background: var(--fnac-white);
    border-radius: var(--fnac-radius-lg);
    padding: 40px;
    box-shadow: var(--fnac-shadow);
    border: 1px solid var(--fnac-border);
    max-width: 600px;
    margin: 0 auto;
}

.tracking-form {
    display: flex;
    gap: 10px;
}

.tracking-form .form-control {
    flex: 1;
}

.tracking-result {
    margin-top: 30px;
}

.tracking-timeline {
    position: relative;
    padding-left: 30px;
}

.tracking-timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--fnac-border);
}

.timeline-item {
    position: relative;
    padding-bottom: 25px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -25px;
    top: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--fnac-border);
    border: 3px solid var(--fnac-white);
}

.timeline-item.active .timeline-dot {
    background: var(--fnac-yellow);
    box-shadow: 0 0 0 4px rgba(235,179,0,0.22);
}

.timeline-item.completed .timeline-dot {
    background: var(--fnac-black);
}

.timeline-content h4 {
    font-size: 0.95rem;
    color: var(--fnac-black);
    margin-bottom: 3px;
}

.timeline-content p {
    font-size: 0.8rem;
    color: var(--fnac-gray);
}

/* ===== STATUS BADGE ===== */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-status {
    background: rgba(235,179,0,0.16);
    color: var(--fnac-yellow-dark);
}

/* ===== INFO BOX ===== */
.info-box {
    background: rgba(235,179,0,0.1);
    border-left: 4px solid var(--fnac-yellow);
    padding: 15px 20px;
    border-radius: 0 var(--fnac-radius) var(--fnac-radius) 0;
    margin-bottom: 20px;
}

.info-box p {
    font-size: 0.9rem;
    color: #444;
}

.info-box i {
    color: var(--fnac-yellow-dark);
    margin-right: 5px;
}

/* ===== ALERT ===== */
.alert {
    padding: 15px 20px;
    border-radius: var(--fnac-radius);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-success {
    background: rgba(46,158,91,0.1);
    color: #1c6b3c;
    border: 1px solid rgba(46,158,91,0.25);
}

.alert-error {
    background: rgba(228,53,107,0.1);
    color: #a01f47;
    border: 1px solid rgba(228,53,107,0.22);
}

.alert-info {
    background: rgba(235,179,0,0.1);
    color: #8a6a00;
    border: 1px solid rgba(235,179,0,0.25);
}

/* ===== PROCESS STEPS (home) ===== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    counter-reset: step;
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--fnac-yellow);
    color: var(--fnac-black);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    margin: 0 auto 15px;
}

.process-step h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--fnac-black);
}

.process-step p {
    font-size: 0.85rem;
    color: var(--fnac-gray);
}

/* ===== CONFIRMATION ===== */
.confirmation-card {
    background: var(--fnac-white);
    border-radius: var(--fnac-radius-lg);
    padding: 40px;
    box-shadow: var(--fnac-shadow);
    border: 1px solid var(--fnac-border);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.confirmation-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(46,158,91,0.12);
    color: var(--fnac-success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 20px;
}

.confirmation-code {
    background: var(--fnac-light);
    padding: 15px 25px;
    border-radius: var(--fnac-radius);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--fnac-black);
    letter-spacing: 2px;
    display: inline-block;
    margin: 15px 0;
    border: 2px dashed var(--fnac-yellow);
}

/* ===== SUMMARY TABLE ===== */
.summary-table {
    width: 100%;
    text-align: left;
}

.summary-table tr {
    border-bottom: 1px solid var(--fnac-border);
}

.summary-table th {
    padding: 10px 15px;
    font-weight: 600;
    color: var(--fnac-gray);
    font-size: 0.85rem;
    width: 40%;
    vertical-align: top;
}

.summary-table td {
    padding: 10px 15px;
    font-size: 0.9rem;
    color: var(--fnac-black);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--fnac-black);
    color: rgba(255,255,255,0.72);
    padding: 50px 0 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-col h4 {
    color: var(--fnac-white);
    font-size: 1rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.72);
}

.footer-col ul li a:hover {
    color: var(--fnac-yellow);
}

.footer-col ul li i {
    width: 20px;
    color: var(--fnac-yellow);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.85rem;
}

/* ===== FILE UPLOAD ===== */
.file-upload {
    border: 2px dashed var(--fnac-border);
    border-radius: var(--fnac-radius);
    padding: 25px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.file-upload:hover {
    border-color: var(--fnac-yellow);
    background: rgba(235,179,0,0.04);
}

.file-upload input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-upload i {
    font-size: 1.5rem;
    color: var(--fnac-gray);
    margin-bottom: 8px;
    display: block;
}

.file-upload span {
    font-size: 0.85rem;
    color: var(--fnac-gray);
}

.file-upload .file-name {
    margin-top: 8px;
    font-weight: 600;
    color: var(--fnac-yellow-dark);
    font-size: 0.85rem;
}

/* ===== PAGE HEADER ===== */
.page-header {
    background: var(--fnac-black);
    color: var(--fnac-white);
    padding: 42px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 4px;
    background: var(--fnac-yellow);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.page-header h1 i {
    color: var(--fnac-yellow);
}

.page-header p {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
}

/* ===== FORM CARD ===== */
.form-card {
    background: var(--fnac-white);
    border-radius: var(--fnac-radius-lg);
    padding: 35px;
    box-shadow: var(--fnac-shadow);
    border: 1px solid var(--fnac-border);
    margin-top: -30px;
    position: relative;
    z-index: 1;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--fnac-white);
        flex-direction: column;
        padding: 15px;
        border-top: 1px solid var(--fnac-border);
        box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    }

    .nav.open {
        display: flex;
    }

    .hero h1 {
        font-size: 1.9rem;
    }

    .hero p {
        font-size: 1rem;
    }

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

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

    .modality-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

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

    .stepper {
        gap: 0;
        overflow-x: auto;
        padding-bottom: 30px;
    }

    .stepper-line {
        width: 30px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .form-card {
        padding: 20px;
        margin: -20px 10px 0;
    }

    .repair-options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .devices-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero {
        padding: 50px 0 40px;
    }

    .container {
        padding: 0 15px;
    }
}

/* ===== LOADING SPINNER ===== */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(235,179,0,0.3);
    border-radius: 50%;
    border-top-color: var(--fnac-yellow);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== HIDDEN UTIL ===== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}