/* ═══════════════════════════════════════════
   YT MultiTracker Pro — Login Page Styles
   ═══════════════════════════════════════════ */

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

/* ─── Particle Canvas ─── */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* ─── Ambient Glow ─── */
.login-page::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float-glow 8s ease-in-out infinite;
}

.login-page::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float-glow 10s ease-in-out infinite reverse;
}

@keyframes float-glow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ─── Login Card ─── */
.login-card {
    width: 100%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    position: relative;
    z-index: 2;
    box-shadow: 
        0 16px 64px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    animation: card-enter 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    opacity: 0;
}

@keyframes card-enter {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.login-logo-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.2);
    animation: logo-pulse 3s ease-in-out infinite;
}

@keyframes logo-pulse {
    0%, 100% { box-shadow: 0 8px 24px rgba(0, 212, 255, 0.2); }
    50% { box-shadow: 0 8px 32px rgba(0, 212, 255, 0.35); }
}

.login-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-1);
}

.login-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ─── Login Form ─── */
.login-form .form-group {
    margin-bottom: var(--space-5);
}

.login-input-wrapper {
    position: relative;
}

.login-input-wrapper .input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
    transition: color var(--transition-fast);
}

.login-input-wrapper .form-input {
    padding-left: 42px;
    height: 48px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
}

.login-input-wrapper .form-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.login-input-wrapper .form-input:focus + .input-icon,
.login-input-wrapper .form-input:focus ~ .input-icon {
    color: var(--accent-cyan);
}

.toggle-password {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-2);
    font-size: 16px;
    transition: color var(--transition-fast);
}

.toggle-password:hover {
    color: var(--text-secondary);
}

/* ─── Login Button ─── */
.login-btn {
    width: 100%;
    height: 48px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: 700;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

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

/* Shimmer effect */
.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.15),
        transparent
    );
    transition: left 0.5s ease;
}

.login-btn:hover::before {
    left: 100%;
}

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

/* ─── Error Message ─── */
.login-error {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: var(--danger);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* ─── Timeout Message ─── */
.login-timeout {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: var(--warning);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ─── Footer ─── */
.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.login-footer p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

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

/* ─── Mobile ─── */
@media (max-width: 480px) {
    .login-card {
        margin: var(--space-4);
        padding: var(--space-6);
    }
    .login-logo-icon {
        width: 52px;
        height: 52px;
        font-size: 22px;
    }
    .login-title {
        font-size: var(--font-size-xl);
    }
}