/* ═══════════════════════════════════════════════════════
   REGISTER PAGE — Dark Mode + Red & White Accents
   File: css/register-theme.css
   Scope: body.theme-register only
   ═══════════════════════════════════════════════════════ */

/* ── Palette ───────────────────────────────────────── */
.theme-register {
    --reg-red: #ef4444;
    --reg-red-bright: #f87171;
    --reg-red-dark: #dc2626;
    --reg-red-deep: #b91c1c;
    --reg-red-dim: rgba(239, 68, 68, 0.12);
    --reg-white: #ffffff;
    --reg-bg: #0a0a0a;
    --reg-surface: #141414;
    --reg-surface-hover: #1a1a1a;
    --reg-card: rgba(20, 20, 20, 0.8);
    --reg-border: rgba(255, 255, 255, 0.08);
    --reg-border-input: rgba(255, 255, 255, 0.12);
    --reg-text: #f5f5f5;
    --reg-text-muted: #a3a3a3;
    --reg-text-dim: #737373;
    --reg-shadow-card: 0 4px 40px rgba(0, 0, 0, 0.5), 0 0 80px rgba(239, 68, 68, 0.03);
    --reg-shadow-input: inset 0 1px 3px rgba(0, 0, 0, 0.4);
    --reg-shadow-glow: 0 0 40px rgba(239, 68, 68, 0.15);
}

/* ── Base ────────────────────────────────────────── */
.theme-register {
    background: var(--reg-bg);
    color: var(--reg-text);
    position: relative;
}

/* Subtle noise + red glow overlay */
.theme-register::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% -10%, rgba(239, 68, 68, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 100%, rgba(239, 68, 68, 0.04) 0%, transparent 50%),
        url('data:image/svg+xml,%3Csvg viewBox="0 0 256 256" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="n"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.7" numOctaves="4" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23n)"/%3E%3C/svg%3E');
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

.theme-register>* {
    position: relative;
    z-index: 1;
}

/* ── Header (Dark + Red accent) ──────────────────── */
.theme-register .reg-header {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--reg-border);
}

.theme-register .reg-header .logo {
    color: var(--reg-white);
}

.theme-register .reg-header .logo em {
    color: var(--reg-red);
    font-style: normal;
}

.theme-register .reg-header .nav-list a {
    color: var(--reg-text-muted);
}

.theme-register .reg-header .nav-list a:hover,
.theme-register .reg-header .nav-list a.active {
    color: var(--reg-red);
}

.theme-register .reg-header .hamburger span {
    background: var(--reg-white);
}

/* ── Hero Section ────────────────────────────────── */
.reg-hero {
    padding: clamp(6rem, 12vw, 9rem) 0 clamp(3rem, 6vw, 5rem);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Decorative red glow */
.reg-hero::before {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(239, 68, 68, 0.12) 0%, transparent 65%);
    top: -250px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
}

.reg-hero__badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--reg-red);
    background: var(--reg-red-dim);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.4rem 1.2rem;
    border-radius: 9999px;
    margin-bottom: 1.5rem;
}

.reg-hero__title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--reg-white);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.reg-hero__subtitle {
    font-size: 1.05rem;
    color: var(--reg-text-muted);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── Form Section ────────────────────────────────── */
.reg-form-section {
    padding-top: 0 !important;
    padding-bottom: clamp(4rem, 8vw, 6rem);
}

/* ── Tab Switcher ────────────────────────────────── */
.theme-register .tab-switcher {
    background: var(--reg-surface);
    border: 1px solid var(--reg-border);
    box-shadow: none;
}

.theme-register .tab-btn {
    color: var(--reg-text-dim);
    font-weight: 600;
}

.theme-register .tab-btn:hover {
    color: var(--reg-text);
}

.theme-register .tab-btn.active {
    background: var(--reg-red);
    color: var(--reg-white);
    box-shadow: 0 2px 12px rgba(239, 68, 68, 0.3);
    border: none;
}

.theme-register .tab-btn:focus-visible {
    outline: 2px solid var(--reg-red);
    outline-offset: 2px;
}

/* ── Form Card ───────────────────────────────────── */
.theme-register .form-card {
    background: var(--reg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--reg-border);
    box-shadow: var(--reg-shadow-card);
}

.theme-register .form-card .card-title {
    color: var(--reg-text);
    border-bottom-color: var(--reg-border);
    font-weight: 500;
}

.theme-register .form-card .card-title strong {
    color: var(--reg-red);
    font-weight: 800;
}

/* ── Labels ──────────────────────────────────────── */
.theme-register .form-group label {
    color: var(--reg-text-muted);
}

/* ── Inputs & Textarea ───────────────────────────── */
.theme-register .form-group .input,
.theme-register .form-group textarea {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--reg-border-input);
    color: var(--reg-text);
    box-shadow: var(--reg-shadow-input);
}

.theme-register .form-group .input::placeholder,
.theme-register .form-group textarea::placeholder {
    color: var(--reg-text-dim);
}

.theme-register .form-group .input:focus,
.theme-register .form-group textarea:focus {
    border-color: var(--reg-red);
    box-shadow: 0 0 0 3px var(--reg-red-dim), var(--reg-shadow-input);
}

/* ── Custom File Input ───────────────────────────── */
.theme-register .file-upload-wrapper {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.theme-register .file-upload-wrapper input[type="file"] {
    display: none;
}

.theme-register .btn-file {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--reg-border-input);
    color: var(--reg-text);
    padding: 0.85rem 1.25rem;
    border-radius: var(--r-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.theme-register .btn-file:hover {
    background: var(--reg-red-deep);
    border-color: var(--reg-red);
    color: var(--reg-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.theme-register .btn-file:active {
    transform: translateY(0);
}

.theme-register .file-name {
    font-size: 0.85rem;
    color: var(--reg-text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    width: 100%;
    text-align: center;
}

/* ── Hints ───────────────────────────────────────── */
.theme-register .hint {
    color: var(--reg-text-dim);
}

/* ── Checkbox ────────────────────────────────────── */
.theme-register .checkbox-label {
    color: var(--reg-text);
}

.theme-register .custom-checkbox {
    background: rgba(0, 0, 0, 0.4);
    border-color: var(--reg-border-input);
}

.theme-register .checkbox-label input:checked~.custom-checkbox {
    background: var(--reg-red);
    border-color: var(--reg-red);
}

.theme-register .checkbox-label input:checked~.custom-checkbox::after {
    border-color: var(--reg-white);
}

.theme-register .checkbox-label input:focus-visible~.custom-checkbox {
    outline-color: var(--reg-red);
}

/* ── Submit Button ───────────────────────────────── */
.theme-register .btn-submit {
    background: var(--reg-red);
    color: var(--reg-white);
    border-radius: var(--r-full);
    font-weight: 800;
    letter-spacing: 0.08em;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.theme-register .btn-submit::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.theme-register .btn-submit:hover {
    background: var(--reg-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(239, 68, 68, 0.35), var(--reg-shadow-glow);
}

.theme-register .btn-submit:active {
    transform: translateY(0);
    background: var(--reg-red-deep);
}

.theme-register .btn-submit:focus-visible {
    outline: 2px solid var(--reg-red-bright);
    outline-offset: 3px;
}

/* ── Messages ────────────────────────────────────── */
.theme-register .msg-success {
    color: #4ade80;
}

.theme-register .msg-error {
    color: var(--reg-red-bright);
}

.theme-register .error-text {
    color: var(--reg-red-bright);
}

.theme-register .input-error {
    border-color: var(--reg-red) !important;
}

/* ── Footer ──────────────────────────────────────── */
.theme-register .reg-footer {
    background: #050505;
    border-top: 1px solid var(--reg-border);
}

.theme-register .reg-footer .logo {
    color: var(--reg-white);
}

.theme-register .reg-footer .logo em {
    color: var(--reg-red);
    font-style: normal;
}

.theme-register .reg-footer h4 {
    color: var(--reg-white);
}

.theme-register .reg-footer a {
    color: var(--reg-text-dim);
}

.theme-register .reg-footer a:hover {
    color: var(--reg-red-bright);
}

.theme-register .reg-footer .footer-socials a {
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--reg-text-muted);
}

.theme-register .reg-footer .footer-socials a:hover {
    background: var(--reg-red);
    border-color: var(--reg-red);
    color: var(--reg-white);
}

.theme-register .reg-footer .footer-bottom {
    border-top-color: var(--reg-border);
    color: var(--reg-text-dim);
}

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 640px) {
    .theme-register .form-card {
        padding: var(--sp-6);
    }

    .reg-hero {
        padding: clamp(5rem, 10vw, 7rem) 0 2rem;
    }
}

/* ── Reduced Motion ──────────────────────────────── */
@media (prefers-reduced-motion: reduce) {

    .theme-register .btn-submit,
    .theme-register .tab-btn {
        transition: none !important;
    }
}