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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow: hidden;
}

/* CSS Variables for Theme Colors */
:root {
    /* Light Theme Colors */
    --bg-primary-light: linear-gradient(180deg, #FFE8CC 0%, #E8F4FD 100%);
    --bg-secondary-light: rgba(255, 255, 255, 0.95);
    --text-primary-light: #333;
    --text-secondary-light: #666;
    --input-bg-light: #f8f9fa;
    --input-border-light: #e9ecef;
    --brand-color-light: #FF6B35;
    --tagline-color-light: #666;
    --splash-bg-light: #FFF7ED;
    
    /* Dark Theme Colors */
    --bg-primary-dark: #000000;
    --bg-secondary-dark: transparent;
    --text-primary-dark: #ffffff;
    --text-secondary-dark: #999999;
    --input-bg-dark: rgba(255, 255, 255, 0.05);
    --input-border-dark: rgba(255, 255, 255, 0.1);
    --brand-color-dark: #FF9E4D;
    --tagline-color-dark: #888;
    --splash-bg-dark: #000;
}

/* Theme Toggle Styles */
.theme-toggle-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
}

.theme-toggle-btn {
    width: 60px;
    height: 30px;
    border-radius: 15px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, #FF6B35, #FF8C42);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
    overflow: hidden;
}

.theme-toggle-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.theme-toggle-btn[data-theme="dark"] {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    box-shadow: 0 4px 15px rgba(26, 26, 46, 0.3);
}

.theme-toggle-btn[data-theme="dark"]:hover {
    box-shadow: 0 6px 20px rgba(26, 26, 46, 0.4);
}

.toggle-slider {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
}

.toggle-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sun-icon {
    left: 4px;
    color: #FFA500;
    transform: scale(1);
}

.moon-icon {
    right: 4px;
    color: #4A5568;
    transform: scale(0);
    opacity: 0;
}

.theme-toggle-btn[data-theme="dark"] .sun-icon {
    transform: scale(0);
    opacity: 0;
}

.theme-toggle-btn[data-theme="dark"] .moon-icon {
    transform: scale(1);
    opacity: 1;
}

/* Theme-based styles */
body[data-theme="light"] {
    --bg-primary: var(--bg-primary-light);
    --bg-secondary: var(--bg-secondary-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --input-bg: var(--input-bg-light);
    --input-border: var(--input-border-light);
    --brand-color: var(--brand-color-light);
    --tagline-color: var(--tagline-color-light);
    --splash-bg: var(--splash-bg-light);
}

body[data-theme="dark"] {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --input-bg: var(--input-bg-dark);
    --input-border: var(--input-border-dark);
    --brand-color: var(--brand-color-dark);
    --tagline-color: var(--tagline-color-dark);
    --splash-bg: var(--splash-bg-dark);
}

/* Splash Screen Styles */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--splash-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.5s ease-out;
}

.splash-screen.fade-out {
    opacity: 0;
}

.splash-content {
    text-align: center;
    animation: fadeInScale 1s ease-out;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.fox-logo {
    animation: bounce 2s infinite;
}

.brand-name {
    font-size: 3rem;
    font-weight: 700;
    color: var(--brand-color);
    letter-spacing: 2px;
    margin: 0;
}

.tagline {
    font-size: 1.2rem;
    color: var(--tagline-color);
    font-weight: 400;
    margin: 0;
    letter-spacing: 1px;
}

/* Login Page Styles */
.login-page {
    display: flex;
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 100% 0%, rgba(255, 158, 77, 0.15), transparent 50%),
        radial-gradient(circle at 0% 100%, rgba(0, 163, 255, 0.08), transparent 50%);
    justify-content: center;
    align-items: center;
}

.login-background {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
    text-align: center;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo-wrapper {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.login-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.login-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.login-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.input-label {
    display: block;
    text-align: left;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.phone-input-group {
    display: flex;
    gap: 12px;
    height: 56px;
}

.country-code-box, .phone-number-box {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    height: 100%;
}

.country-code-box {
    padding: 0 18px;
    min-width: 75px;
    color: var(--text-primary);
    font-weight: 500;
}

.phone-number-box {
    flex: 1;
    padding: 0 20px;
}

.phone-number-box.focused, .phone-number-box:focus-within {
    border-color: #FF9E4D;
    box-shadow: 0 0 0 3px rgba(255, 158, 77, 0.1);
}

.country-code-box:hover {
    border-color: rgba(255, 158, 77, 0.4);
}

.phone-input {
    width: 100%;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

.phone-input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.login-btn {
    width: 100%;
    height: 56px;
    background: #FF9E4D;
    color: #000;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(255, 158, 77, 0.2);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 158, 77, 0.3);
    background: #ffa861;
}

.arrow {
    font-size: 1.2rem;
}

.signup-footer {
    margin-top: 40px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.signup-link {
    color: #FF9E4D;
    text-decoration: none;
    font-weight: 600;
    margin-left: 5px;
}

.signup-link:hover {
    text-decoration: underline;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
    .login-container {
        padding: 10px;
    }
    
    .login-title {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    
    .login-subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .phone-input-group {
        gap: 8px;
    }
    
    .country-code-box {
        min-width: 65px;
        padding: 0 12px;
    }
    
    .login-btn {
        height: 52px;
        font-size: 1rem;
    }
    
    .signup-footer {
        margin-top: 30px;
    }
}

/* Fade out animation for splash screen */
.fade-out {
    opacity: 0 !important;
    pointer-events: none;
}

/* Email/Password input group */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    height: 56px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-group:focus-within {
    border-color: #FF9E4D;
    box-shadow: 0 0 0 3px rgba(255, 158, 77, 0.1);
}

.input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.input-icon-right {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-shrink: 0;
    transition: color 0.2s;
}

.input-icon-right:hover {
    color: #FF9E4D;
}

.form-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    padding: 0 4px;
}

.form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-check-group {
    text-align: left;
}

.remember-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
}

.remember-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #FF9E4D;
    cursor: pointer;
}

/* Error alert */
.alert-error {
    background: rgba(220, 53, 69, 0.12);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 10px;
    color: #ff6b6b;
    padding: 12px 16px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    text-align: left;
}

/* Login page visible state */
.login-page.visible {
    display: flex;
}

/* override opacity for JS control */
.login-page {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}