/* --- 1. VARIABLES --- */
:root {
    /* Colors */
    --bg-main: #030712;
    --bg-secondary: #0f172a;
    --primary: #2563eb;
    --primary-glow: rgba(37, 99, 235, 0.4);
    --accent: #06b6d4;
    --accent-glow: rgba(6, 182, 212, 0.4);
    --error: #ef4444;
    --success: #10b981;
    
    /* Text */
    --text-white: #f8fafc;
    --text-gray: #94a3b8;
    --text-placeholder: #64748b;

    /* UI */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --font-main: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. RESET & BASE --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--bg-main);
    color: var(--text-white);
    font-family: var(--font-main);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

/* Ambient Glows */
.ambient-glow {
    position: fixed; width: 600px; height: 600px;
    border-radius: 50%; filter: blur(140px); z-index: -1; opacity: 0.25;
    pointer-events: none;
}
.glow-1 { top: -150px; left: -150px; background: var(--primary); }
.glow-2 { bottom: -150px; right: -150px; background: var(--accent); }

/* --- 3. FIXED SMART BACK BUTTON --- */
.fixed-back-btn {
    position: fixed; top: 24px; right: 24px; z-index: 100;
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px;
    background: rgba(3, 7, 18, 0.6);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 50px;
    color: var(--text-gray); font-size: 0.9rem; font-weight: 500;
    transition: var(--transition); box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.fixed-back-btn:hover {
    background: rgba(255, 255, 255, 0.1); border-color: var(--text-white);
    color: var(--text-white); transform: translateX(-3px);
}

/* --- 4. LAYOUT & CARD --- */
.login-container {
    width: 100%; padding: 24px;
    display: flex; justify-content: center; align-items: center; min-height: 100vh;
}
.glass-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08); border-radius: var(--radius-lg);
    padding: 40px; width: 100%; max-width: 480px; position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); transition: var(--transition);
}
.glass-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

/* --- 5. HEADER & LOGO --- */
.card-header { text-align: center; margin-bottom: 32px; transition: var(--transition); }
.logo-link { display: inline-block; margin-bottom: 20px; }
.card-logo { 
    height: 50px; width: auto; 
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.1)); transition: var(--transition);
}
.logo-link:hover .card-logo { transform: scale(1.05); filter: drop-shadow(0 0 15px rgba(6, 182, 212, 0.4)); }
.card-header h1 { font-size: 1.8rem; font-weight: 700; margin-bottom: 8px; color: var(--text-white); }
.card-header p { color: var(--text-gray); font-size: 0.95rem; }

/* --- 6. FORMS & INPUTS --- */
.form-group { margin-bottom: 20px; position: relative; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-gray); margin-bottom: 8px; font-weight: 500; }
.input-wrapper { position: relative; display: flex; align-items: center; }
.input-icon {
    position: absolute; left: 16px; color: var(--text-placeholder); font-size: 1rem;
    transition: var(--transition); pointer-events: none;
}
.input-wrapper input {
    width: 100%; background: rgba(3, 7, 18, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius-sm);
    padding: 12px 16px 12px 44px; color: var(--text-white);
    font-size: 1rem; transition: var(--transition); outline: none;
}
.input-wrapper input:hover { border-color: rgba(255, 255, 255, 0.2); }
.input-wrapper input:focus {
    border-color: var(--accent); background: rgba(3, 7, 18, 0.8);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}
.input-wrapper input:focus ~ .input-icon { color: var(--accent); }
.input-wrapper.error input { border-color: var(--error); }
.input-wrapper.error .input-icon { color: var(--error); }
.error-msg { 
    display: none; color: var(--error); font-size: 0.8rem; margin-top: 6px; 
    animation: fadeIn 0.3s ease;
}
.input-wrapper.error + .error-msg { display: block; }

/* Toggle Password */
.toggle-password {
    position: absolute; right: 16px; color: var(--text-placeholder);
    transition: var(--transition); padding: 5px;
}
.toggle-password:hover { color: var(--text-white); }

/* Checkbox */
.form-options {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px; font-size: 0.9rem;
}
.custom-checkbox {
    display: flex; align-items: center; gap: 8px; cursor: pointer; color: var(--text-gray); user-select: none;
}
.custom-checkbox input { display: none; }
.checkmark {
    width: 18px; height: 18px; border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px; display: flex; align-items: center; justify-content: center;
    background: rgba(3, 7, 18, 0.6); transition: var(--transition); position: relative;
}
.custom-checkbox input:checked ~ .checkmark { background: var(--primary); border-color: var(--primary); }
.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity 0.15s ease;
}
.custom-checkbox input:checked ~ .checkmark::after { opacity: 1; }
.custom-checkbox:hover .checkmark { border-color: rgba(255,255,255,0.4); }
.forgot-link { color: var(--text-gray); font-size: 0.85rem; }
.forgot-link:hover { color: var(--text-white); text-decoration: underline; }

/* --- 7. BUTTONS --- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 24px; border-radius: 50px; font-weight: 600; font-size: 1rem;
    transition: var(--transition); width: 100%; text-align: center;
}
.btn-primary {
    background: linear-gradient(90deg, var(--primary), #1d4ed8);
    color: white; box-shadow: 0 4px 20px var(--primary-glow); border: none;
}
.btn-primary:not(:disabled):hover {
    transform: translateY(-2px); box-shadow: 0 8px 30px var(--primary-glow);
}
.btn-primary:disabled {
    background: rgba(255,255,255,0.05); color: rgba(255,255,255,0.3);
    box-shadow: none; cursor: not-allowed; border: 1px solid rgba(255,255,255,0.05);
}
.btn-outline {
    background: transparent; border: 1px solid rgba(255,255,255,0.15);
    color: var(--text-gray); font-weight: 500; font-size: 0.95rem;
}
.btn-outline:hover {
    background: rgba(255,255,255,0.05); border-color: var(--text-white); color: var(--text-white);
}
.btn-block { width: 100%; }

/* --- 8. FEEDBACK MESSAGES (NEW) --- */
.form-feedback {
    margin-top: 16px;
    font-size: 0.9rem;
    text-align: center;
    min-height: 1.5em; /* Avoid layout jumps */
    transition: opacity 0.3s;
}
.form-feedback.success { color: var(--success); }
.form-feedback.error { color: var(--error); }

/* --- 9. FOOTER & DIVIDER --- */
.divider {
    display: flex; align-items: center; text-align: center;
    margin: 24px 0; color: var(--text-placeholder); font-size: 0.85rem;
}
.divider::before, .divider::after {
    content: ''; flex: 1; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.divider span { padding: 0 10px; text-transform: uppercase; letter-spacing: 1px; font-size: 0.75rem; }

.social-login { margin-bottom: 24px; }
.card-footer { text-align: center; font-size: 0.9rem; color: var(--text-gray); }
.register-link { color: var(--text-white); font-weight: 600; margin-left: 5px; }
.register-link:hover { color: var(--accent); text-decoration: underline; }

.legal-footer-links { margin-top: 16px; font-size: 0.8rem; color: var(--text-placeholder); }
.legal-link { color: var(--text-gray); transition: var(--transition); }
.legal-link:hover { color: var(--text-white); text-decoration: underline; }

/* Loading Animation */
.hidden { display: none !important; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.fa-spin { animation: spin 1s linear infinite; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* --- 10. RESPONSIVE --- */
@media(min-width:1200px){ }
@media(max-width:1199px) and (min-width:992px){
    .glass-card { max-width: 440px; padding: 35px; }
}
@media(max-width:991px) and (min-width:768px){
    .glass-card { max-width: 420px; padding: 30px; }
    .card-header h1 { font-size: 1.6rem; }
}
@media(max-width:767px){
    .login-container { align-items: flex-start; padding-top: 80px; }
    .glass-card { padding: 16px; }
    .fixed-back-btn { top: 16px; right: 16px; padding: 8px 16px; font-size: 0.85rem; }
}

/* --- 11. TWO FACTOR MODAL --- */
.twofa-overlay {
    position: fixed;
    inset: 0;
    z-index: 1600;
    background: rgba(3, 7, 18, 0.78);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.twofa-modal {
    width: 100%;
    max-width: 420px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    padding: 22px 20px;
    box-shadow: 0 24px 44px rgba(0, 0, 0, 0.45);
}

.twofa-logo {
    display: block;
    width: 180px;
    height: auto;
    margin: 0 auto 14px;
    opacity: 0.95;
}

.twofa-modal h2 {
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: 8px;
}

.twofa-subtitle {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 16px;
}

.twofa-otp {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.twofa-digit {
    width: 100%;
    height: 52px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(3, 7, 18, 0.66);
    color: var(--text-white);
    font-size: 1.35rem;
    text-align: center;
    outline: none;
    transition: var(--transition);
}

.twofa-digit:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}

.twofa-link-btn {
    width: 100%;
    text-align: left;
    color: #93c5fd;
    font-size: 0.86rem;
    margin-bottom: 10px;
}

.twofa-link-btn:hover {
    color: #dbeafe;
    text-decoration: underline;
}

.twofa-backup-wrap {
    margin-bottom: 12px;
}

.twofa-backup-wrap input {
    width: 100%;
    height: 46px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(3, 7, 18, 0.66);
    color: var(--text-white);
    font-size: 0.95rem;
    padding: 0 12px;
    outline: none;
}

.twofa-backup-wrap input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}

.twofa-trust-row {
    margin-bottom: 10px;
    font-size: 0.82rem;
}

.twofa-feedback {
    min-height: 18px;
    margin-bottom: 12px;
    font-size: 0.84rem;
    color: var(--error);
}

.twofa-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

@media(max-width: 520px) {
    .twofa-overlay {
        align-items: flex-start;
        padding: 14px 12px;
        overflow-y: auto;
    }

    .twofa-modal {
        margin-top: 10px;
        padding: 18px 14px;
    }

    .twofa-logo {
        width: 156px;
        margin-bottom: 10px;
    }

    .twofa-modal h2 {
        font-size: 1.36rem;
    }

    .twofa-subtitle {
        font-size: 0.92rem;
    }

    .twofa-otp {
        gap: 6px;
    }

    .twofa-digit {
        height: 48px;
        font-size: 1.22rem;
    }

    .twofa-actions {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1024px) and (max-width: 1600px) {
    .fixed-back-btn {
        top: 18px;
        right: 18px;
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .ambient-glow {
        width: 480px;
        height: 480px;
        filter: blur(112px);
    }

    .login-container {
        padding: 18px;
    }

    .glass-card {
        max-width: 384px;
        padding: 32px;
        border-radius: 19px;
    }

    .card-header {
        margin-bottom: 26px;
    }

    .card-logo {
        height: 40px;
    }

    .card-header h1 {
        font-size: 1.44rem;
    }

    .card-header p {
        font-size: 0.82rem;
    }

    .form-group {
        margin-bottom: 16px;
    }

    .form-group label,
    .remember-forgot,
    .error-msg,
    .divider,
    .card-footer {
        font-size: 0.8rem;
    }

    .input-icon {
        left: 13px;
        font-size: 0.88rem;
    }

    .input-wrapper input {
        min-height: 42px;
        padding: 10px 38px 10px 38px;
        font-size: 0.88rem;
    }

    .btn {
        padding: 11px 18px;
        font-size: 0.88rem;
    }
}
t: 42px;
        padding: 10px 38px 10px 38px;
        font-size: 0.88rem;
    }

    .btn {
        padding: 11px 18px;
        font-size: 0.88rem;
    }
}