/* ========================================
   Registration — Mobile-first Wizard
   ======================================== */

/* Top bar */
.reg-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 1.25rem;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.reg-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    text-decoration: none;
}

/* Progress bar */
.reg-progress {
    position: fixed;
    top: 53px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--color-border);
    z-index: 100;
    transition: transform 0.3s ease;
}

.reg-progress-fill {
    height: 100%;
    width: 25%;
    background-color: var(--color-text);
    transition: width 0.4s ease;
}

/* Main area */
.reg-main {
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: 56px;
    display: flex;
    flex-direction: column;
}

/* Steps */
.reg-step {
    display: none;
    flex: 1;
    animation: regFadeIn 0.35s ease;
}

.reg-step.active {
    display: flex;
}

@keyframes regFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.reg-step-inner {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.reg-step-inner-cam {
    max-width: 540px;
}

.reg-centered {
    justify-content: center;
    align-items: center;
    text-align: center;
}

/* Step header */
.reg-step-header {
    margin-bottom: 1.5rem;
}

.reg-step-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.reg-step-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.reg-step-desc {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Back button */
.reg-back {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    padding: 0;
    margin-bottom: 1rem;
    transition: color var(--transition-fast);
}

.reg-back:hover {
    color: var(--color-text);
}

/* Form */
.reg-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

.reg-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.reg-label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.reg-input {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 300;
    padding: 0.9rem 1rem;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 0;
    transition: border-color var(--transition-fast);
}

.reg-input:focus {
    border-color: var(--color-text-muted);
}

.reg-input::placeholder {
    color: #555;
}

.reg-input.error {
    border-color: #E35169;
}

.reg-input[type="date"] {
    min-height: 48px;
}

.reg-input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.7);
    cursor: pointer;
}

.reg-field-error {
    font-size: 0.8rem;
    color: #E35169;
    min-height: 1rem;
}

.reg-field-hint {
    font-size: 0.7rem;
    color: #555;
    letter-spacing: 0.02em;
}

/* Phone row */
.reg-phone-row {
    display: flex;
    gap: 0.5rem;
}

.reg-input-phone-code {
    flex: 0 0 90px;
    text-align: center;
    appearance: auto;
    -webkit-appearance: auto;
    cursor: pointer;
}

.reg-input-phone {
    flex: 1;
}

/* Checkbox */
.reg-check {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    margin-top: 0.25rem;
}

.reg-check input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.reg-check-box {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    margin-top: 1px;
}

.reg-check-box::after {
    content: '';
    display: none;
    width: 5px;
    height: 10px;
    border: solid var(--color-bg);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-top: -2px;
}

.reg-check input:checked ~ .reg-check-box {
    background-color: var(--color-text);
    border-color: var(--color-text);
}

.reg-check input:checked ~ .reg-check-box::after {
    display: block;
}

.reg-check-text {
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.reg-check-text a {
    color: var(--color-text);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.reg-check-text a:hover {
    color: var(--color-hover);
}

.reg-check.error .reg-check-box {
    border-color: #E35169;
}

/* Chips (document type) */
.reg-chips {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.reg-chip {
    flex: 1;
    min-width: 0;
    padding: 0.7rem 0.5rem;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.reg-chip:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.reg-chip.selected {
    background-color: var(--color-text);
    border-color: var(--color-text);
    color: var(--color-bg);
}

.reg-chips.error .reg-chip {
    border-color: #E35169;
}

/* ========================================
   Camera — iOS-like experience
   ======================================== */

.cam-fullscreen {
    position: relative;
    background-color: #000;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1rem;
}

/* Live viewfinder */
.cam-live {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cam-live video {
    width: 100%;
    display: block;
    object-fit: cover;
    min-height: 280px;
    max-height: 420px;
    background-color: #111;
}

/* Mirror selfie */
.cam-overlay-face + .cam-toolbar ~ video,
#videoFace {
    transform: scaleX(-1);
}

/* Guide overlays */
.cam-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 1;
    /* Darken edges */
    background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.4) 100%);
}

.cam-overlay-face {
    background: radial-gradient(ellipse at center, transparent 35%, rgba(0,0,0,0.5) 100%);
}

.cam-guide-frame {
    width: 82%;
    aspect-ratio: 1.585 / 1;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-radius: 10px;
}

.cam-guide-oval {
    width: 50%;
    aspect-ratio: 3 / 4;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-radius: 50%;
}

/* Bottom toolbar */
.cam-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 0 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
}

.cam-toolbar-spacer {
    flex: 1;
}

/* Shutter — iOS style */
.cam-shutter {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: transparent;
    border: 4px solid #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.12s ease;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}

.cam-shutter:active {
    transform: scale(0.92);
}

.cam-shutter-ring {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background-color: #fff;
    display: block;
    transition: transform 0.12s ease;
}

.cam-shutter:active .cam-shutter-ring {
    transform: scale(0.9);
}

/* "Iniciando cámara..." placeholder */
.cam-live::before {
    content: 'Iniciando cámara...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255,255,255,0.4);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    z-index: 0;
}

.cam-live.ready::before {
    display: none;
}

/* Review screen (after capture, before accept) */
.cam-review {
    display: flex;
    flex-direction: column;
}

.cam-review img {
    width: 100%;
    display: block;
    object-fit: contain;
    max-height: 420px;
    min-height: 280px;
    background-color: #111;
}

.cam-review-bar {
    display: flex;
}

.cam-review-btn {
    flex: 1;
    padding: 14px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.cam-review-retake {
    background-color: #1a1a1a;
    color: var(--color-text-muted);
}

.cam-review-retake:hover {
    background-color: #222;
    color: var(--color-text);
}

.cam-review-use {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.cam-review-use:hover {
    background-color: #ccc;
}

/* Document thumbnails */
.cam-thumbs {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.cam-thumb {
    flex: 1;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-alt);
    text-align: center;
    overflow: hidden;
}

.cam-thumb.captured {
    border-color: var(--color-text-muted);
}

.cam-thumb-label {
    display: block;
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.cam-thumb-empty {
    padding: 1.25rem;
    color: #333;
    font-size: 1.25rem;
}

.cam-thumb img {
    width: 100%;
    height: 60px;
    object-fit: cover;
    display: block;
}

/* ========================================
   Buttons
   ======================================== */

.reg-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 52px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.875rem 1.5rem;
    border: 1px solid var(--color-text);
    background-color: var(--color-text);
    color: var(--color-bg);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: auto;
}

.reg-btn:hover {
    background-color: transparent;
    color: var(--color-text);
}

.reg-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.reg-btn:disabled:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.reg-btn.loading {
    opacity: 0.6;
    pointer-events: none;
}

.reg-btn-text,
.reg-btn-loading {
    display: block;
}

.reg-btn-loading {
    display: none;
}

.reg-btn.loading .reg-btn-text {
    display: none;
}

.reg-btn.loading .reg-btn-loading {
    display: block;
}

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

.reg-btn-ghost:hover {
    background-color: var(--color-text-muted);
    color: var(--color-bg);
    border-color: var(--color-text-muted);
}

.reg-btn-link {
    background-color: transparent;
    color: var(--color-text);
}

.reg-btn-link:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* Result screens */
.reg-result-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 1.5px solid var(--color-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1.5rem;
}

.reg-result-warn {
    border-color: #FFA439;
    color: #FFA439;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 300;
}

.reg-result-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    margin-top: 1.5rem;
}

/* Footer */
.reg-footer {
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.65rem;
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
}

.reg-footer-links {
    display: flex;
    gap: 1rem;
}

.reg-footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.reg-footer-links a:hover {
    color: var(--color-text);
}

/* Toast */
.reg-toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background-color: #E35169;
    color: #fff;
    padding: 0.75rem 1.25rem;
    font-size: 0.8rem;
    font-family: var(--font-body);
    z-index: 1000;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    max-width: 90vw;
    text-align: center;
    border-radius: 0;
}

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

/* ========================================
   Desktop (> 640px)
   ======================================== */
@media (min-width: 641px) {
    .reg-topbar {
        padding: 1.25rem 2rem;
    }

    .reg-step-inner {
        padding: 3rem 2rem 4rem;
    }

    .reg-step-title {
        font-size: 2.25rem;
    }

    .cam-live video,
    .cam-review img {
        max-height: 480px;
    }

    .cam-thumb img {
        height: 80px;
    }

    .reg-result-actions {
        flex-direction: row;
        justify-content: center;
    }

    .reg-result-actions .reg-btn {
        width: auto;
        min-width: 160px;
    }

    .reg-btn {
        width: auto;
        min-width: 200px;
        align-self: flex-start;
    }
}