/* ============================================
   NSTrack Portal - Authentication Styles
   ============================================ */

/* Auth Body */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-darkest);
    position: relative;
    overflow: hidden;
}

/* Background Effects */
.auth-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
}

.auth-bg-gradient {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(244, 63, 94, 0.08) 0%, transparent 50%);
    animation: rotateGradient 30s linear infinite;
}

@keyframes rotateGradient {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.auth-bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(244, 63, 94, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(244, 63, 94, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.auth-bg-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
    opacity: 0.4;
    filter: blur(80px);
}

/* Auth Container */
.auth-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 440px;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo */
.auth-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 40px;
}

.auth-logo-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    filter: drop-shadow(0 0 20px var(--primary-glow));
}

.auth-logo-text {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Auth Card */
.auth-card {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: 
        0 4px 24px rgba(0, 0, 0, 0.4),
        0 0 80px rgba(244, 63, 94, 0.08);
    backdrop-filter: blur(10px);
}

/* Tab Navigation */
.auth-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    margin-bottom: 32px;
}

.auth-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.auth-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 16px var(--primary-glow);
}

/* Auth Forms */
.auth-form {
    display: none;
    flex-direction: column;
    gap: 20px;
}

.auth-form.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Auth Header */
.auth-header {
    text-align: center;
    margin-bottom: 8px;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Form Group Overrides */
.auth-form .form-group {
    gap: 10px;
}

.auth-form .form-group label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

/* Input Wrapper */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.input-wrapper:focus-within .input-icon {
    color: var(--primary);
}

.auth-form .form-input {
    width: 100%;
    padding: 16px 16px 16px 48px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

/* Input with password toggle needs extra right padding */
.auth-form .form-input[type="password"],
.auth-form .form-input[type="text"].password-visible {
    padding-right: 56px;
}

.input-wrapper:has(.password-toggle) .form-input {
    padding-right: 56px;
}

.auth-form .form-input:hover {
    border-color: var(--border-light);
}

.auth-form .form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

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

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.password-toggle:hover {
    color: var(--primary);
    background: var(--bg-elevated);
}

.eye-icon {
    width: 18px;
    height: 18px;
}

/* Password Strength */
.password-strength {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    opacity: 0;
    height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.password-strength.visible {
    opacity: 1;
    height: 20px;
}

.strength-bar {
    flex: 1;
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.strength-bar::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0%;
    background: var(--error);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.password-strength.weak .strength-bar::after {
    width: 33%;
    background: var(--error);
}

.password-strength.medium .strength-bar::after {
    width: 66%;
    background: var(--warning);
}

.password-strength.strong .strength-bar::after {
    width: 100%;
    background: var(--success);
}

.strength-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 60px;
}

.password-strength.weak .strength-text {
    color: var(--error);
}

.password-strength.medium .strength-text {
    color: var(--warning);
}

.password-strength.strong .strength-text {
    color: var(--success);
}

/* Form Error */
.form-error {
    display: none;
    padding: 14px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    color: var(--error);
    font-size: 0.85rem;
    font-weight: 500;
    animation: shake 0.4s ease;
}

.form-error.visible {
    display: block;
}

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

/* Auth Button */
.btn-auth {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 20px var(--primary-glow);
    overflow: hidden;
    margin-top: 8px;
}

.btn-auth:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

.btn-auth:active:not(:disabled) {
    transform: translateY(0);
}

.btn-auth:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-arrow {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-auth:hover:not(:disabled) .btn-arrow {
    transform: translateX(4px);
}

.btn-loader {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    opacity: 0;
    animation: spin 0.8s linear infinite;
}

.btn-auth.loading .btn-text,
.btn-auth.loading .btn-arrow {
    opacity: 0;
}

.btn-auth.loading .btn-loader {
    opacity: 1;
}

/* Auth Footer */
.auth-footer {
    margin-top: 32px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 500px) {
    .auth-container {
        padding: 20px 16px;
    }

    .auth-card {
        padding: 24px 20px;
    }

    .auth-logo-text {
        font-size: 1.6rem;
    }

    .auth-title {
        font-size: 1.3rem;
    }
}