/**
 * Custom Auth System - Styles
 * 
 * Modern animated login/registration UI
 * Dark theme with cyan/teal gradient accents
 */

/* ========================================
   CSS Variables & Reset
======================================== */
.cas-auth-wrapper {
    --cas-primary: #00d4ff;
    --cas-primary-dark: #00a8cc;
    --cas-secondary: #6c63ff;
    --cas-accent: #00f5d4;
    --cas-bg-dark: #0a0a1a;
    --cas-bg-card: #12122a;
    --cas-bg-input: #1a1a3a;
    --cas-text: #ffffff;
    --cas-text-muted: #8888aa;
    --cas-border: #2a2a4a;
    --cas-success: #00e676;
    --cas-error: #ff5252;
    --cas-warning: #ffab40;
    --cas-gradient: linear-gradient(135deg, var(--cas-primary) 0%, var(--cas-secondary) 100%);
    --cas-gradient-accent: linear-gradient(135deg, var(--cas-accent) 0%, var(--cas-primary) 100%);
    --cas-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    --cas-shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --cas-radius: 16px;
    --cas-radius-sm: 8px;
    --cas-transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    font-family: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    box-sizing: border-box;
}

.cas-auth-wrapper *,
.cas-auth-wrapper *::before,
.cas-auth-wrapper *::after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
}

/* ========================================
   Main Wrapper
======================================== */
.cas-auth-wrapper {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: var(--cas-bg-dark);
    overflow: hidden;
}

/* Background Shapes */
.cas-auth-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.cas-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: floatShape 8s ease-in-out infinite;
}

.cas-shape-1 {
    width: 400px;
    height: 400px;
    background: var(--cas-primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.cas-shape-2 {
    width: 300px;
    height: 300px;
    background: var(--cas-secondary);
    bottom: -50px;
    left: -50px;
    animation-delay: 2s;
}

.cas-shape-3 {
    width: 200px;
    height: 200px;
    background: var(--cas-accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 4s;
}

@keyframes floatShape {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(30px, -30px) scale(1.1);
    }
}

/* ========================================
   Auth Container (Combined Form)
======================================== */
.cas-auth-container {
    position: relative;
    width: 100%;
    max-width: 850px;
    min-height: 580px;
    display: flex;
    background: var(--cas-bg-card);
    border-radius: var(--cas-radius);
    box-shadow: var(--cas-shadow);
    overflow: hidden;
    z-index: 1;
}

/* Standalone Container */
.cas-standalone-container {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--cas-bg-card);
    border-radius: var(--cas-radius);
    box-shadow: var(--cas-shadow);
    overflow: hidden;
    z-index: 1;
}

.cas-standalone .cas-form-panel {
    position: relative;
    width: 100%;
    padding: 50px 40px;
    opacity: 1;
    visibility: visible;
    transform: none;
}

/* ========================================
   Form Panels
======================================== */
.cas-form-panel {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    padding: 35px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: var(--cas-transition);
    z-index: 2;
    overflow-y: auto;
}

.cas-login-panel {
    left: 0;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.cas-register-panel {
    right: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
}

/* Toggled State */
.cas-auth-container.toggled .cas-login-panel {
    opacity: 0;
    visibility: hidden;
    transform: translateX(-100%);
}

.cas-auth-container.toggled .cas-register-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* ========================================
   Overlay Panel
======================================== */
.cas-overlay-panel {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    background: var(--cas-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--cas-transition);
    z-index: 10;
    overflow: hidden;
}

.cas-overlay-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {

    0%,
    100% {
        transform: translateX(-100%);
    }

    50% {
        transform: translateX(100%);
    }
}

.cas-overlay-content {
    position: absolute;
    width: 100%;
    padding: 40px;
    text-align: center;
    color: var(--cas-text);
    transition: var(--cas-transition);
}

.cas-overlay-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.cas-overlay-content p {
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 260px;
    margin: 0 auto;
}

.cas-overlay-left {
    transform: translateX(-100%);
    opacity: 0;
}

.cas-overlay-right {
    transform: translateX(0);
    opacity: 1;
}

/* Toggled Overlay */
.cas-auth-container.toggled .cas-overlay-panel {
    left: 0;
}

.cas-auth-container.toggled .cas-overlay-left {
    transform: translateX(0);
    opacity: 1;
}

.cas-auth-container.toggled .cas-overlay-right {
    transform: translateX(100%);
    opacity: 0;
}

/* ========================================
   Form Elements
======================================== */
.cas-form-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--cas-text);
    margin-bottom: 20px;
    text-align: center;
    background: var(--cas-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cas-form {
    width: 100%;
}

.cas-form-group {
    margin-bottom: 15px;
}

.cas-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--cas-bg-input);
    border: 2px solid var(--cas-border);
    border-radius: var(--cas-radius-sm);
    transition: var(--cas-transition);
    overflow: hidden;
}

.cas-input-wrapper:focus-within {
    border-color: var(--cas-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.cas-input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 48px;
    color: var(--cas-text-muted);
    flex-shrink: 0;
    transition: var(--cas-transition);
}

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

.cas-input {
    flex: 1;
    height: 48px;
    padding: 0 15px 0 0;
    background: transparent;
    border: none;
    outline: none;
    color: var(--cas-text);
    font-size: 0.95rem;
    font-family: inherit;
}

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

.cas-input:-webkit-autofill,
.cas-input:-webkit-autofill:hover,
.cas-input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px var(--cas-bg-input) inset !important;
    -webkit-text-fill-color: var(--cas-text) !important;
    transition: background-color 5000s ease-in-out 0s;
}

/* Select Styling */
.cas-select-wrapper {
    position: relative;
}

.cas-select {
    cursor: pointer;
    appearance: none;
    padding-right: 40px !important;
}

.cas-select-wrapper::after {
    content: '';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--cas-text-muted);
    pointer-events: none;
    transition: var(--cas-transition);
}

.cas-select-wrapper:focus-within::after {
    border-top-color: var(--cas-primary);
}

.cas-select option {
    background: var(--cas-bg-card);
    color: var(--cas-text);
    padding: 10px;
}

/* Password Toggle */
.cas-password-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: none;
    border: none;
    color: var(--cas-text-muted);
    cursor: pointer;
    transition: var(--cas-transition);
    flex-shrink: 0;
}

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

/* ========================================
   Buttons
======================================== */
.cas-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 30px;
    border: none;
    border-radius: var(--cas-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--cas-transition);
    text-decoration: none;
}

.cas-btn-primary {
    width: 100%;
    background: var(--cas-gradient);
    color: var(--cas-text);
    position: relative;
    overflow: hidden;
}

.cas-btn-primary::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;
}

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

.cas-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--cas-shadow-glow);
}

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

.cas-btn-secondary {
    background: transparent;
    color: var(--cas-text);
    border: 2px solid var(--cas-border);
}

.cas-btn-secondary:hover {
    border-color: var(--cas-primary);
    color: var(--cas-primary);
}

/* Button Loading State */
.cas-btn-submit {
    position: relative;
}

.cas-btn-submit.loading .cas-btn-text {
    opacity: 0;
}

.cas-btn-submit.loading .cas-btn-loader {
    opacity: 1;
}

.cas-btn-loader {
    position: absolute;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--cas-text);
    border-radius: 50%;
    opacity: 0;
    animation: spin 0.8s linear infinite;
    transition: opacity 0.3s;
}

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

/* ========================================
   Form Switch
======================================== */
.cas-form-switch {
    margin-top: 20px;
    padding-bottom: 10px;
    text-align: center;
    color: var(--cas-text-muted);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.cas-switch-trigger {
    color: var(--cas-primary);
    text-decoration: none;
    font-weight: 600;
    margin-left: 5px;
    transition: var(--cas-transition);
}

.cas-switch-trigger:hover {
    color: var(--cas-accent);
    text-decoration: underline;
}

/* ========================================
   Messages
======================================== */
.cas-message {
    min-height: 0;
    max-height: 0;
    padding: 0;
    margin: 0;
    border-radius: var(--cas-radius-sm);
    font-size: 0.9rem;
    text-align: center;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
}

.cas-message.show {
    min-height: 44px;
    max-height: 80px;
    padding: 12px 15px;
    margin-bottom: 15px;
    opacity: 1;
}

.cas-message.success {
    background: rgba(0, 230, 118, 0.15);
    color: var(--cas-success);
    border: 1px solid rgba(0, 230, 118, 0.3);
}

.cas-message.error {
    background: rgba(255, 82, 82, 0.15);
    color: var(--cas-error);
    border: 1px solid rgba(255, 82, 82, 0.3);
}

.cas-message.warning {
    background: rgba(255, 171, 64, 0.15);
    color: var(--cas-warning);
    border: 1px solid rgba(255, 171, 64, 0.3);
}

/* ========================================
   OTP Modal
======================================== */
.cas-otp-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--cas-transition);
}

.cas-otp-modal.show {
    opacity: 1;
    visibility: visible;
}

.cas-otp-modal-content {
    position: relative;
    width: 90%;
    max-width: 400px;
    background: var(--cas-bg-card);
    border-radius: var(--cas-radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--cas-shadow);
    transform: scale(0.9) translateY(30px);
    transition: var(--cas-transition);
}

.cas-otp-modal.show .cas-otp-modal-content {
    transform: scale(1) translateY(0);
}

.cas-otp-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    background: var(--cas-bg-input);
    border: none;
    border-radius: 50%;
    color: var(--cas-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--cas-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cas-otp-close:hover {
    background: var(--cas-error);
    color: var(--cas-text);
}

.cas-otp-icon {
    margin-bottom: 25px;
    color: var(--cas-primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.cas-otp-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cas-text);
    margin-bottom: 10px;
}

.cas-otp-subtitle {
    color: var(--cas-text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
    line-height: 1.5;
}

.cas-otp-subtitle strong {
    color: var(--cas-primary);
}

/* OTP Inputs */
.cas-otp-inputs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 25px;
}

.cas-otp-input {
    width: 50px;
    height: 60px;
    background: var(--cas-bg-input);
    border: 2px solid var(--cas-border);
    border-radius: var(--cas-radius-sm);
    color: var(--cas-text);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    outline: none;
    transition: var(--cas-transition);
}

.cas-otp-input:focus {
    border-color: var(--cas-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.cas-otp-input.filled {
    border-color: var(--cas-success);
}

.cas-otp-input.error {
    border-color: var(--cas-error);
    animation: shake 0.5s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-5px);
    }

    40%,
    80% {
        transform: translateX(5px);
    }
}

/* OTP Resend */
.cas-otp-resend {
    color: var(--cas-text-muted);
    font-size: 0.9rem;
    margin-top: 20px;
}

.cas-otp-resend a {
    color: var(--cas-primary);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}

.cas-otp-resend a:hover {
    text-decoration: underline;
}

.cas-otp-resend a.disabled {
    color: var(--cas-text-muted);
    pointer-events: none;
}

#casResendTimer {
    display: inline-block;
    margin-left: 5px;
    color: var(--cas-warning);
    font-weight: 600;
}

/* ========================================
   Logged In State
======================================== */
.cas-logged-in {
    text-align: center;
    padding: 40px;
    background: var(--cas-bg-card);
    border-radius: var(--cas-radius);
    max-width: 400px;
    margin: 0 auto;
}

.cas-logged-in p {
    color: var(--cas-text);
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.cas-logged-in-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 768px) {
    .cas-auth-container {
        flex-direction: column;
        max-width: 420px;
        min-height: auto;
    }

    .cas-form-panel {
        position: relative;
        width: 100%;
        padding: 40px 30px;
    }

    .cas-login-panel {
        display: block;
    }

    .cas-register-panel {
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .cas-auth-container.toggled .cas-login-panel {
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .cas-auth-container.toggled .cas-register-panel {
        display: block;
    }

    /* Hide overlay on mobile */
    .cas-overlay-panel {
        display: none;
    }

    .cas-otp-inputs {
        gap: 6px;
    }

    .cas-otp-input {
        width: 42px;
        height: 52px;
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .cas-auth-wrapper {
        padding: 20px 15px;
    }

    .cas-form-panel,
    .cas-standalone .cas-form-panel {
        padding: 30px 20px;
    }

    .cas-form-title {
        font-size: 1.5rem;
    }

    .cas-otp-modal-content {
        padding: 30px 20px;
    }

    .cas-otp-input {
        width: 38px;
        height: 48px;
        font-size: 1.1rem;
    }
}