@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

/* Default Theme: Dark Mode Settings */
:root {
    --bg-gradient: linear-gradient(135deg, #0f0c20 0%, #15102a 50%, #060214 100%);
    --orb-1-color: rgba(124, 58, 237, 0.4);
    --orb-2-color: rgba(6, 182, 212, 0.35);
    
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.4);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --input-bg: rgba(0, 0, 0, 0.25);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-text: #ffffff;
    --input-focus-border: #8b5cf6;
    --input-focus-shadow: rgba(139, 92, 246, 0.25);
    
    --btn-bg: linear-gradient(90deg, #7c3aed 0%, #06b6d4 100%);
    --btn-text: #ffffff;
    --btn-shadow: rgba(124, 58, 237, 0.3);
    
    --error-bg: rgba(239, 68, 68, 0.15);
    --error-text: #fca5a5;
    --error-border: rgba(239, 68, 68, 0.3);
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-gradient: linear-gradient(135deg, #eef2f6 0%, #e0e7ff 50%, #f5f3ff 100%);
    --orb-1-color: rgba(167, 139, 250, 0.45);
    --orb-2-color: rgba(103, 232, 249, 0.45);
    
    --glass-bg: rgba(255, 255, 255, 0.45);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: rgba(31, 41, 55, 0.08);
    
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --input-bg: rgba(255, 255, 255, 0.6);
    --input-border: rgba(209, 213, 219, 0.6);
    --input-text: #1f2937;
    --input-focus-border: #6366f1;
    --input-focus-shadow: rgba(99, 102, 241, 0.15);
    
    --btn-bg: linear-gradient(90deg, #6366f1 0%, #06b6d4 100%);
    --btn-text: #ffffff;
    --btn-shadow: rgba(99, 102, 241, 0.2);
    
    --error-bg: rgba(239, 68, 68, 0.08);
    --error-text: #b91c1c;
    --error-border: rgba(239, 68, 68, 0.2);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
}

/* Floating Decorative Orbs */
.bg-orbs {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: drift 20s infinite alternate ease-in-out;
}

.orb-1 {
    width: 450px;
    height: 450px;
    background: var(--orb-1-color);
    top: -10%;
    left: 10%;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--orb-2-color);
    bottom: -10%;
    right: 10%;
    animation-delay: -5s;
}

@keyframes drift {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(80px, 50px) scale(1.15);
    }
}

/* Header Controls (Lang & Theme) */
.controls-header {
    position: absolute;
    top: 2rem;
    right: 2rem;
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}

.control-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.6rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 6px var(--glass-shadow);
    outline: none;
    text-decoration: none;
    transition: all 0.2s ease;
}

.control-btn:hover {
    transform: translateY(-2px);
    border-color: var(--input-focus-border);
}

.lang-buttons-container {
    display: flex;
    gap: 0.5rem;
}

/* Glassmorphism Card Container */
.login-container {
    position: relative;
    z-index: 5;
    width: 100%;
    max-width: 440px;
    padding: 2.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px) saturate(160%);
    box-shadow: 0 20px 40px var(--glass-shadow);
    text-align: center;
}

.logo-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.logo-section p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

/* Error Display Banner */
.error-banner {
    display: none;
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error-text);
    padding: 0.9rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: left;
    margin-bottom: 1.5rem;
    line-height: 1.4;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Form Styles */
.form-group {
    position: relative;
    text-align: left;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--input-text);
    padding: 0.9rem 1rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 400;
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus {
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 3px var(--input-focus-shadow);
}

.toggle-password-btn {
    position: absolute;
    right: 0.85rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem;
}

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

.toggle-password-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Caps Lock Warning Banner */
.caps-warning {
    display: none;
    color: var(--error-text);
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Sliding Password Section */
.password-section {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.password-section.visible {
    max-height: 150px;
    opacity: 1;
    margin-bottom: 1.5rem;
}

/* Remember Me Checkbox */
.remember-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.remember-group input[type="checkbox"] {
    accent-color: var(--input-focus-border);
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.remember-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
}

/* Submit Action Button */
.submit-btn {
    width: 100%;
    background: var(--btn-bg);
    border: none;
    color: var(--btn-text);
    padding: 1rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 16px var(--btn-shadow);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px var(--btn-shadow);
    filter: brightness(1.1);
}

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

/* Modal Loading Overlay */
.loading-overlay {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 24px;
    z-index: 100;
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
    color: #ffffff;
    font-weight: 500;
    animation: fadeIn 0.2s ease;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    .login-container {
        max-width: 400px;
        padding: 2.2rem;
    }
}

@media (max-width: 480px) {
    body {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        padding: 5.5rem 1rem 1.5rem 1rem; /* Space at top to clear absolute header buttons */
    }

    .controls-header {
        position: absolute;
        top: 1.25rem;
        right: 1.25rem;
        gap: 0.4rem;
    }

    .control-btn {
        padding: 0.5rem 0.85rem;
        font-size: 0.8rem;
    }

    .login-container {
        width: 100%;
        max-width: 100%;
        padding: 1.75rem 1.25rem;
        border-radius: 18px;
        box-shadow: 0 10px 25px var(--glass-shadow);
    }

    .logo-section h2 {
        font-size: 1.6rem;
    }

    .logo-section p {
        font-size: 0.85rem;
        margin-bottom: 1.5rem;
    }

    .form-input {
        padding: 0.8rem 0.9rem;
        font-size: 0.95rem;
    }

    .submit-btn {
        padding: 0.85rem;
        font-size: 0.95rem;
    }
}