/**
 * Login Page CSS - Modern CMS
 *
 * Modernes, sicheres Login-Design
 * Passt zum Dashboard Dark Theme
 */

/* ===========================
   Variables & Reset
   =========================== */
:root {
    --login-primary: #667eea;
    --login-primary-dark: #5568d3;
    --login-secondary: #764ba2;
    --login-bg: #0a0e27;
    --login-card-bg: rgba(17, 24, 39, 0.8);
    --login-input-bg: rgba(31, 41, 55, 0.6);
    --login-input-border: rgba(107, 114, 128, 0.3);
    --login-text: #f9fafb;
    --login-text-muted: #9ca3af;
    --login-danger: #ef4444;
    --login-success: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--login-bg);
    color: var(--login-text);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ===========================
   Animated Background
   =========================== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.bg-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    opacity: 0.1;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.bg-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.15), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(255, 255, 255, 0.1), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.1), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.15), transparent),
        radial-gradient(2px 2px at 90% 60%, rgba(255, 255, 255, 0.1), transparent),
        radial-gradient(1px 1px at 33% 80%, rgba(255, 255, 255, 0.1), transparent);
    background-size: 200% 200%;
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
}

/* ===========================
   Login Container
   =========================== */
.login-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--login-card-bg);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: cardFadeIn 0.6s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===========================
   Login Header
   =========================== */
.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--login-primary), var(--login-secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    background: linear-gradient(135deg, var(--login-primary), var(--login-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--login-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

/* ===========================
   Alert Container
   =========================== */
#alertContainer {
    margin-bottom: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 12px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: alertSlideIn 0.3s ease-out;
}

@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.alert i {
    font-size: 1.2rem;
}

/* ===========================
   Login Form
   =========================== */
.login-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--login-text);
}

.form-label i {
    font-size: 1rem;
    opacity: 0.8;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1.125rem;
    background: var(--login-input-bg);
    border: 1.5px solid var(--login-input-border);
    border-radius: 12px;
    color: var(--login-text);
    font-size: 0.95rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-control:focus {
    outline: none;
    border-color: var(--login-primary);
    background: rgba(31, 41, 55, 0.8);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

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

/* Password Toggle */
.password-input-wrapper {
    position: relative;
}

/* Remember Me Checkbox */
.form-check {
    margin-bottom: 1.5rem;
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--login-input-border);
    background-color: var(--login-input-bg);
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-check-input:checked {
    background-color: var(--login-primary);
    border-color: var(--login-primary);
}

.form-check-input:focus {
    border-color: var(--login-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-check-label {
    margin-left: 0.5rem;
    color: var(--login-text);
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--login-text-muted);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s ease;
    font-size: 1.1rem;
}

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

.password-toggle:focus {
    outline: none;
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--login-primary), var(--login-secondary));
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-login::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 ease;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

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

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

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

.btn-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* ===========================
   Login Footer
   =========================== */
.login-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.login-footer small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--login-text-muted);
}

.login-footer i {
    color: var(--login-success);
}

/* ===========================
   Version Info
   =========================== */
.version-info {
    margin-top: 2rem;
    text-align: center;
    color: var(--login-text-muted);
    font-size: 0.85rem;
    opacity: 0.6;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
    .login-card {
        padding: 2rem 1.5rem;
    }

    .login-logo {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

    .login-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 1rem;
    }

    .login-card {
        padding: 1.5rem 1.25rem;
    }
}

/* ===========================
   Utility Classes
   =========================== */
.d-none {
    display: none !important;
}

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