/* Momentran V2 — Login Page */

/* ═══ Login Nav ═══ */
.login-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.login-nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}

.login-nav-logo-img {
    height: 26px;
    width: auto;
    filter: brightness(0) invert(1);
}

[data-theme="light"] .login-nav-logo-img {
    filter: none;
}

.login-nav-logo span {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
    letter-spacing: -0.02em;
}

.login-nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.login-nav-home {
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-display);
    color: var(--text);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    text-decoration: none;
    transition: all var(--duration-normal) ease;
}

.login-nav-home:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Lang toggle */
.login-nav .lang-toggle {
    display: flex;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3px;
    cursor: pointer;
}
.login-nav .lang-toggle span {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-display);
    border-radius: 16px;
    color: var(--text3);
    transition: all 0.15s ease;
    user-select: none;
}
.login-nav .lang-toggle span.active {
    background: var(--accent);
    color: #fff;
}

/* Mobile responsive */
@media (max-width: 480px) {
    .login-nav { padding: 0 16px; height: 56px; }
    .login-nav-logo span { display: none; }
    .login-nav-right { gap: 8px; }
    .login-nav-home { padding: 6px 12px; font-size: 12px; }
}

.login-page {
    min-height: 100vh;
    padding-top: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

/* Ambient background glow */
.login-page::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -200px; right: -100px;
    pointer-events: none;
}
.login-page::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(6,182,212,0.08) 0%, transparent 70%);
    bottom: -100px; left: -50px;
    pointer-events: none;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 24px;
}

/* Logo & branding */
.login-brand {
    text-align: center;
    margin-bottom: 40px;
}

.login-brand-logo {
    height: 48px;
    width: auto;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}
[data-theme="light"] .login-brand-logo {
    filter: none;
}

.login-brand h1 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text) 0%, var(--text2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-brand p {
    color: var(--text3);
    font-size: 0.87rem;
    margin-top: 6px;
}

/* Auth Tabs */
.auth-tabs {
    display: flex;
    background: var(--bg3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 24px;
    gap: 4px;
}

.auth-tab {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-radius: calc(var(--radius-sm) - 2px);
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text3);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.auth-tab:hover {
    color: var(--text);
}

.auth-tab.active {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 2px 8px rgba(20,184,166,0.3);
}

/* Form row (side-by-side) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 480px) {
    .form-row { grid-template-columns: 1fr; gap: 0; }
}

/* Card */
.login-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-3);
}

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

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text2);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.93rem;
    transition: all var(--duration-fast) var(--ease-out);
    outline: none;
}

.form-input::placeholder { color: var(--text3); }

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input:hover:not(:focus) {
    border-color: var(--bg5);
}

/* Submit button */
.btn-primary {
    width: 100%;
    padding: 13px 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(20,184,166,0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Error message */
.login-error {
    display: none;
    padding: 10px 14px;
    background: var(--coral-bg);
    border: 1px solid rgba(244,63,94,0.2);
    border-radius: var(--radius-sm);
    color: var(--coral);
    font-size: 0.85rem;
    margin-bottom: 16px;
    animation: fadeIn 0.3s var(--ease-out);
}

.login-error.show { display: block; }

/* Footer */
.login-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--text3);
    font-size: 0.8rem;
}

/* Theme toggle on login page */
.login-theme-toggle {
    width: 36px; height: 36px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    border-radius: 10px;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-normal) var(--ease-out);
}

.login-theme-toggle:hover {
    color: var(--text);
    border-color: var(--accent);
}

.login-theme-toggle .icon-sun,
.login-theme-toggle .icon-moon { width: 18px; height: 18px; }

.login-theme-toggle .icon-moon { display: none; }
[data-theme="light"] .login-theme-toggle .icon-sun { display: none; }
[data-theme="light"] .login-theme-toggle .icon-moon { display: block; }

/* Loading state */
.btn-loading {
    pointer-events: none;
}
.btn-loading .btn-text { opacity: 0; }
.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px; height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive */
@media (max-width: 480px) {
    .login-container { padding: 16px; }
    .login-card { padding: 24px 20px; }
    .login-brand h1 { font-size: 1.5rem; }
}