/* ==========================================================================
   Aura Cyber - Next-Gen Obsidian Prism Theme
   Continuous All-Time Animations & Interactive Canvas FX
   ========================================================================== */

:root {
    /* Obsidian Cyber Palette */
    --bg-void: #03050c;
    --card-bg: rgba(9, 13, 25, 0.82);
    --card-border: rgba(0, 242, 254, 0.25);
    --card-shadow: 0 35px 70px -15px rgba(0, 0, 0, 0.9), 0 0 50px rgba(0, 242, 254, 0.15);
    
    --cyan-glow: #00f2fe;
    --blue-glow: #4facfe;
    --purple-glow: #9d4edd;
    --pink-glow: #ff007f;
    
    --cyber-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 35%, #9d4edd 70%, #ff007f 100%);
    --overlay-gradient: linear-gradient(135deg, rgba(3, 10, 28, 0.95) 0%, rgba(13, 6, 32, 0.95) 50%, rgba(28, 3, 20, 0.95) 100%);
    --btn-gradient: linear-gradient(135deg, #00f2fe 0%, #7f00ff 100%);
    --btn-hover: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
    
    --text-main: #f1f5f9;
    --text-sub: #94a3b8;
    --text-muted: #475569;
    
    --input-bg: rgba(255, 255, 255, 0.03);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus: #00f2fe;
    --input-glow: rgba(0, 242, 254, 0.35);
    
    --danger: #ff2a6d;
    --success: #05ffa1;
    --warning: #ffb703;
    
    /* Fonts */
    --font-heading: 'Orbitron', -apple-system, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
    
    /* Easing */
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-void);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
    padding: 24px;
}

/* ==========================================================================
   Continuous Animation 1: HTML5 Canvas Canvas Engine
   ========================================================================== */
#cyber-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: all;
}

/* Continuous Animation 2: Animated Cyber Grid */
.cyber-grid {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background-image: 
        linear-gradient(to right, rgba(0, 242, 254, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 242, 254, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridScroll 30s linear infinite;
}

@keyframes gridScroll {
    from { background-position: 0 0; }
    to { background-position: 50px 50px; }
}

.ambient-vignette {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(circle at 50% 50%, transparent 40%, #03050c 95%);
}

/* ==========================================================================
   Continuous Animation 3: Floating Card Container
   ========================================================================== */
.auth-wrapper {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 980px;
    display: flex;
    justify-content: center;
    /* Continuous all-time floating motion */
    animation: floatCard 6s ease-in-out infinite alternate;
}

@keyframes floatCard {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-12px); }
}

/* ==========================================================================
   Continuous Animation 4: 360 Rotating Conic Neon Border
   ========================================================================== */
.border-glow-wrapper {
    position: absolute;
    inset: -3px;
    border-radius: 30px;
    overflow: hidden;
    z-index: -1;
    filter: blur(8px);
    opacity: 0.85;
}

.rotating-border {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        transparent 0deg,
        var(--cyan-glow) 60deg,
        var(--purple-glow) 120deg,
        var(--pink-glow) 180deg,
        var(--blue-glow) 240deg,
        var(--cyan-glow) 360deg
    );
    animation: rotateConic 8s linear infinite;
}

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

/* ==========================================================================
   Main Auth Card & Cyber Brackets
   ========================================================================== */
.auth-card {
    position: relative;
    width: 100%;
    min-height: 700px;
    background: var(--card-bg);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 28px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    display: flex;
}

/* Cyber Corner Brackets */
.cyber-bracket {
    position: absolute;
    width: 14px;
    height: 14px;
    border: 2px solid var(--cyan-glow);
    z-index: 20;
    pointer-events: none;
    box-shadow: 0 0 8px var(--cyan-glow);
}

.cyber-bracket.top-left { top: 12px; left: 12px; border-right: none; border-bottom: none; }
.cyber-bracket.top-right { top: 12px; right: 12px; border-left: none; border-bottom: none; }
.cyber-bracket.bottom-left { bottom: 12px; left: 12px; border-right: none; border-top: none; }
.cyber-bracket.bottom-right { bottom: 12px; right: 12px; border-left: none; border-top: none; }

/* Continuous Animation 5: Laser Scanning Beam */
.laser-scan {
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent 0%, var(--cyan-glow) 50%, transparent 100%);
    box-shadow: 0 0 15px var(--cyan-glow);
    opacity: 0.6;
    z-index: 15;
    pointer-events: none;
    animation: laserScan 4.5s ease-in-out infinite alternate;
}

@keyframes laserScan {
    0% { top: 0%; opacity: 0; }
    10% { opacity: 0.7; }
    90% { opacity: 0.7; }
    100% { top: 100%; opacity: 0; }
}

/* ==========================================================================
   Form Panels Layout
   ========================================================================== */
.form-container {
    position: absolute;
    top: 0;
    height: 100%;
    width: 50%;
    transition: all 0.65s cubic-bezier(0.77, 0, 0.175, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 48px;
}

.sign-in-container {
    left: 0;
    z-index: 2;
}

.sign-up-container {
    left: 0;
    opacity: 0;
    z-index: 1;
}

/* Panel Switch States */
.auth-card.right-panel-active .sign-in-container {
    transform: translateX(100%);
    opacity: 0;
    z-index: 1;
}

.auth-card.right-panel-active .sign-up-container {
    transform: translateX(100%);
    opacity: 1;
    z-index: 5;
    animation: showForm 0.65s;
}

@keyframes showForm {
    0%, 49.99% { opacity: 0; z-index: 1; }
    50%, 100% { opacity: 1; z-index: 5; }
}

/* Brand Logo & Continuous Glow Pulse */
.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.logo-badge {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-glow {
    position: absolute;
    inset: -4px;
    border-radius: 16px;
    background: var(--cyan-glow);
    filter: blur(12px);
    opacity: 0.35;
    /* Continuous aura pulse */
    animation: auraPulse 3s ease-in-out infinite alternate;
}

@keyframes auraPulse {
    0% { opacity: 0.25; transform: scale(0.95); }
    100% { opacity: 0.55; transform: scale(1.1); }
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: 1px;
    color: #ffffff;
}

.brand-accent {
    background: var(--cyber-gradient);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGradient 6s linear infinite;
}

/* Continuous Animation 6: Gradient Text Movement */
@keyframes textGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Headers */
.form-header {
    margin-bottom: 24px;
}

.form-header h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #ffffff;
    margin-bottom: 6px;
}

.form-header p {
    font-size: 0.85rem;
    color: var(--text-sub);
}

/* Social Buttons */
.social-auth {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.btn-social {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-social:hover {
    background: rgba(0, 242, 254, 0.1);
    border-color: var(--cyan-glow);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.25);
    transform: translateY(-2px);
}

.divider {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.15);
}

.divider span {
    padding: 0 12px;
    font-family: var(--font-heading);
    font-size: 0.675rem;
    letter-spacing: 1px;
    color: var(--text-muted);
}

/* Input Fields */
.input-group {
    margin-bottom: 18px;
    position: relative;
}

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

.input-wrapper input {
    width: 100%;
    padding: 15px 16px 15px 44px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 14px;
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.input-wrapper label {
    position: absolute;
    left: 44px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-sub);
    font-size: 0.85rem;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.input-wrapper input:focus ~ label,
.input-wrapper input:not(:placeholder-shown) ~ label {
    top: 0;
    left: 14px;
    font-size: 0.7rem;
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--cyan-glow);
    background: var(--bg-void);
    padding: 0 6px;
    border-radius: 4px;
}

.input-wrapper input:focus {
    border-color: var(--cyan-glow);
    box-shadow: 0 0 20px var(--input-glow);
}

.input-neon-bar {
    position: absolute;
    bottom: 0;
    left: 10%;
    width: 0%;
    height: 2px;
    background: var(--cyan-glow);
    box-shadow: 0 0 10px var(--cyan-glow);
    transition: var(--transition-smooth);
}

.input-wrapper input:focus ~ .input-neon-bar {
    left: 0;
    width: 100%;
}

.input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-sub);
    pointer-events: none;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.input-wrapper input:focus ~ .input-icon {
    color: var(--cyan-glow);
}

.toggle-password {
    position: absolute;
    right: 14px;
    background: transparent;
    border: none;
    color: var(--text-sub);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.toggle-password:hover {
    color: var(--cyan-glow);
}

.hidden { display: none !important; }

.error-msg {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 4px;
    display: none;
}

.input-group.error input {
    border-color: var(--danger);
}

.input-group.error .error-msg { display: block; }

/* Cyber Password Strength Meter */
.password-strength-container {
    margin-top: 10px;
    display: none;
}

.password-strength-container.active { display: block; }

.strength-meter {
    height: 4px;
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 6px;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: width 0.4s ease, background-color 0.4s ease;
}

.strength-bar.weak { width: 25%; background-color: var(--danger); box-shadow: 0 0 10px var(--danger); }
.strength-bar.fair { width: 50%; background-color: var(--warning); box-shadow: 0 0 10px var(--warning); }
.strength-bar.good { width: 75%; background-color: var(--blue-glow); box-shadow: 0 0 10px var(--blue-glow); }
.strength-bar.strong { width: 100%; background-color: var(--success); box-shadow: 0 0 10px var(--success); }

.strength-info { margin-bottom: 6px; }

.strength-text {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.5px;
    color: var(--text-sub);
}

.strength-requirements {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.req-item {
    font-size: 0.675rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-smooth);
}

.req-icon {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.req-item.valid { color: var(--success); }
.req-item.valid .req-icon {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* Custom Checkbox */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.custom-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-sub);
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    color: white;
}

.checkmark svg {
    opacity: 0;
    transform: scale(0.5);
    transition: var(--transition-smooth);
}

.custom-checkbox input:checked ~ .checkmark {
    background: var(--btn-gradient);
    border-color: transparent;
    box-shadow: 0 0 12px var(--cyan-glow);
}

.custom-checkbox input:checked ~ .checkmark svg {
    opacity: 1;
    transform: scale(1);
}

.forgot-link, .inline-link {
    color: var(--cyan-glow);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.forgot-link:hover, .inline-link:hover {
    color: var(--pink-glow);
    text-shadow: 0 0 8px var(--pink-glow);
}

/* Primary Button */
.btn-primary {
    position: relative;
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 14px;
    background: var(--btn-gradient);
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-primary:hover {
    background: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
}

.btn-primary.loading .btn-text { display: none; }
.btn-primary .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}
.btn-primary.loading .spinner { display: block; }

@keyframes spin { to { transform: rotate(360deg); } }

.mobile-toggle-prompt {
    display: none;
    text-align: center;
    margin-top: 18px;
    font-size: 0.8rem;
    color: var(--text-sub);
}

.mobile-toggle-prompt a {
    color: var(--cyan-glow);
    font-weight: 700;
    text-decoration: none;
}

/* ==========================================================================
   Overlay Sliding Panel
   ========================================================================== */
.overlay-container {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    overflow: hidden;
    transition: transform 0.65s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 100;
}

.auth-card.right-panel-active .overlay-container {
    transform: translateX(-100%);
}

.overlay {
    background: var(--overlay-gradient);
    position: relative;
    left: -100%;
    height: 100%;
    width: 200%;
    transform: translateX(0);
    transition: transform 0.65s cubic-bezier(0.77, 0, 0.175, 1);
}

.auth-card.right-panel-active .overlay {
    transform: translateX(50%);
}

.overlay-panel {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 48px;
    text-align: center;
    top: 0;
    height: 100%;
    width: 50%;
    transition: transform 0.65s cubic-bezier(0.77, 0, 0.175, 1);
}

.overlay-left { transform: translateX(-20%); }
.auth-card.right-panel-active .overlay-left { transform: translateX(0); }

.overlay-right { right: 0; transform: translateX(0); }
.auth-card.right-panel-active .overlay-right { transform: translateX(20%); }

.overlay-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.3);
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    letter-spacing: 1px;
    color: var(--cyan-glow);
    margin-bottom: 20px;
}

/* Continuous Pulse Dot */
.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--cyan-glow);
    box-shadow: 0 0 10px var(--cyan-glow);
    animation: dotPulse 1.8s infinite;
}

@keyframes dotPulse {
    0% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.8); opacity: 0.5; }
}

.overlay-panel h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 1px;
    margin-bottom: 14px;
    color: #ffffff;
}

.overlay-panel p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.8);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--cyan-glow);
    border-radius: 14px;
    color: var(--cyan-glow);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 12px 34px;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.btn-outline:hover {
    background: var(--cyan-glow);
    color: #03050c;
    box-shadow: 0 0 30px var(--cyan-glow);
    transform: translateY(-2px);
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(9, 13, 25, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid var(--cyan-glow);
    border-radius: 14px;
    color: var(--text-main);
    font-size: 0.85rem;
    box-shadow: 0 0 25px rgba(0, 242, 254, 0.3);
    animation: toastIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100px); }
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 5, 12, 0.85);
    backdrop-filter: blur(16px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-card {
    background: var(--card-bg);
    border: 1px solid var(--cyan-glow);
    border-radius: 24px;
    padding: 36px;
    width: 100%;
    max-width: 420px;
    position: relative;
    box-shadow: 0 0 50px rgba(0, 242, 254, 0.3);
    transform: scale(0.9);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-card { transform: scale(1); }

.modal-close {
    position: absolute;
    top: 18px;
    right: 18px;
    background: transparent;
    border: none;
    color: var(--text-sub);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-close:hover { color: var(--cyan-glow); }

.modal-header { text-align: center; margin-bottom: 24px; }
.modal-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(0, 242, 254, 0.1);
    color: var(--cyan-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 6px;
}

.modal-header p { font-size: 0.825rem; color: var(--text-sub); }

/* Responsive */
@media (max-width: 768px) {
    .auth-card {
        flex-direction: column;
        min-height: auto;
    }

    .form-container {
        position: relative;
        width: 100%;
        height: auto;
        padding: 32px 24px;
    }

    .sign-in-container, .sign-up-container {
        left: 0;
        top: 0;
        transform: none !important;
    }

    .sign-up-container { display: none; }

    .auth-card.right-panel-active .sign-in-container { display: none; }
    .auth-card.right-panel-active .sign-up-container { display: flex; opacity: 1; }

    .overlay-container { display: none; }
    .mobile-toggle-prompt { display: block; }
}