/* ============================================
   CHAOS NETWORK — Login Page Styles
   ============================================ */

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

/* ── Animated Background ── */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.login-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 20% 80%, rgba(230,57,70,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 80% 20%, rgba(124,58,237,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 100% 100% at 50% 50%, rgba(6,6,11,0.9) 0%, transparent 100%);
    z-index: 1;
}

.particles {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }
    10% { opacity: 0.6; }
    90% { opacity: 0.4; }
    100% {
        opacity: 0;
        transform: translateY(-10vh) scale(1);
    }
}

/* Grid Lines */
.grid-lines {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image: 
        linear-gradient(rgba(230,57,70,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(230,57,70,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridScroll 20s linear infinite;
}

@keyframes gridScroll {
    0%   { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

/* ── Login Container ── */
.login-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 460px;
    padding: var(--space-6);
    animation: fadeInScale 0.8s ease-out;
}

.login-card {
    background: rgba(20, 20, 31, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    box-shadow: 
        0 25px 60px rgba(0,0,0,0.5),
        0 0 100px rgba(230,57,70,0.05),
        inset 0 1px 0 rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
    opacity: 0.7;
}

/* ── Logo Area ── */
.login-logo {
    text-align: center;
    margin-bottom: var(--space-8);
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    box-shadow: 0 8px 30px var(--primary-glow);
    animation: float 3s ease-in-out infinite;
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: calc(var(--radius-lg) + 3px);
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--primary));
    background-size: 200% 200%;
    z-index: -1;
    opacity: 0.4;
    animation: borderGlow 3s ease-in-out infinite;
    filter: blur(4px);
}

.login-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.login-subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* ── Form ── */
.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.login-field {
    position: relative;
}

.login-field .field-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
    z-index: 2;
    transition: color var(--transition-fast);
}

.login-field input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    background: rgba(10,10,18,0.6);
    border: 1px solid var(--border);
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.login-field input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(10,10,18,0.8);
}

.login-field input:focus ~ .field-icon,
.login-field input:focus + .field-icon {
    color: var(--primary);
}

.login-field .email-domain {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-sm);
    color: var(--text-disabled);
    font-family: var(--font-mono);
    pointer-events: none;
}

.login-field input.email-input {
    padding-right: 170px;
}

/* ── Password Toggle ── */
.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    transition: color var(--transition-fast);
    z-index: 2;
    background: none;
    border: none;
    font-size: 16px;
}
.password-toggle:hover { color: var(--text-primary); }

/* ── Remember Me ── */
.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: calc(-1 * var(--space-2));
}

.remember-me {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* ── Submit ── */
.login-submit {
    width: 100%;
    padding: 14px;
    font-size: var(--text-base);
    font-weight: 700;
    letter-spacing: 0.05em;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
}

.login-submit::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.login-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow), 0 0 60px rgba(230,57,70,0.15);
}
.login-submit:hover::before { opacity: 1; }
.login-submit:active { transform: translateY(0); }

.login-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.login-submit .submit-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin: 0 auto;
}

.login-submit.loading .submit-text { display: none; }
.login-submit.loading .submit-spinner { display: block; }

/* ── Error Message ── */
.login-error {
    display: none;
    padding: var(--space-3) var(--space-4);
    background: var(--danger-glow);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: var(--radius-md);
    color: var(--danger-light);
    font-size: var(--text-sm);
    text-align: center;
    animation: fadeInUp 0.3s ease-out;
}
.login-error.show { display: block; }

/* ── Footer ── */
.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}

.login-footer p {
    font-size: var(--text-xs);
    color: var(--text-disabled);
    line-height: 1.8;
}

.login-footer .cn-version {
    font-family: var(--font-mono);
    color: var(--text-muted);
}

/* ── Background Shapes ── */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
}

.bg-shape-1 {
    width: 400px;
    height: 400px;
    background: rgba(230,57,70,0.06);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.bg-shape-2 {
    width: 300px;
    height: 300px;
    background: rgba(124,58,237,0.06);
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite reverse;
}

.bg-shape-3 {
    width: 200px;
    height: 200px;
    background: rgba(245,158,11,0.04);
    top: 50%;
    left: 50%;
    animation: float 12s ease-in-out infinite;
}

/* ── Responsive ── */
@media (max-width: 520px) {
    .login-container {
        padding: var(--space-4);
    }
    .login-card {
        padding: var(--space-6);
    }
    .login-title {
        font-size: var(--text-xl);
    }
    .login-field .email-domain {
        font-size: 11px;
    }
    .login-field input.email-input {
        padding-right: 150px;
    }
}