/**
 * Kwork AI PM - Login Page Styles
 */
@import url('./variables.css');
@import url('./base.css');
@import url('./components.css');

/* Login Page Layout */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    position: relative;
    overflow: hidden;
}

/* Animated Background */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
}

.login-bg::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 15s ease-in-out infinite;
}

.login-bg::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation: float 20s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, 30px) scale(1.05); }
    50% { transform: translate(-30px, 50px) scale(0.95); }
    75% { transform: translate(30px, -30px) scale(1.02); }
}

/* Grid pattern overlay */
.login-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 440px;
    animation: fadeInUp 0.6s ease-out;
}

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

.login-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.login-logo-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: var(--shadow-glow);
}

.login-logo-text {
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

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

/* Login Card */
.login-card {
    background: rgba(26, 26, 46, 0.9);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-xl);
}

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

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

.login-input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
    transition: color var(--transition-fast);
    z-index: 1;
}

.login-input {
    width: 100%;
    padding: var(--space-4) var(--space-4) var(--space-4) 48px;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.login-input::placeholder {
    color: var(--text-muted);
}

.login-input:hover {
    border-color: var(--gray-500);
}

.login-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.login-input:focus + .login-input-icon,
.login-input:not(:placeholder-shown) + .login-input-icon {
    color: var(--primary-400);
}

/* Password toggle */
.password-toggle {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-1);
    transition: color var(--transition-fast);
}

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

/* Remember me & Forgot password */
.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.login-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-500);
}

.login-forgot {
    font-size: var(--text-sm);
    color: var(--primary-400);
    transition: color var(--transition-fast);
}

.login-forgot:hover {
    color: var(--primary-300);
}

/* Submit Button */
.login-submit {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-base);
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.login-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s;
}

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

.login-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.login-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.login-submit.loading {
    color: transparent;
}

.login-submit.loading::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Error message */
.login-error {
    display: none;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-lg);
    color: var(--error-400);
    font-size: var(--text-sm);
    animation: fadeIn 0.3s ease-out;
}

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

.login-error-icon {
    font-size: 18px;
}

/* Footer */
.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.login-footer a {
    color: var(--primary-400);
    margin-left: var(--space-1);
}

/* Particles animation (decorative) */
.particles {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    animation: particle-float linear infinite;
}

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

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: var(--space-6);
    }
    
    .login-logo-text {
        font-size: var(--text-xl);
    }
}