:root {
    /* Updated Color Palette for Fitness Website */
    --primary-white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --text-dark: #212529;
    --text-medium: #495057;

    /* Energetic Accent Colors */
    --accent-orange: #ff6b35;
    --accent-blue: #007bff;
    --accent-green: #28a745;
    --accent-red: #dc3545;

    /* Gradient combinations */
    --gradient-primary: linear-gradient(135deg, var(--accent-orange), #ff8c42);
    --gradient-secondary: linear-gradient(135deg, var(--accent-blue), #0056b3);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--off-white);
        min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-white);
    overflow-x: hidden;
    position: relative;
}

/* Animated background particles */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent-orange);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.8;
    }
}

/* Header */
.login-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 0.5rem 0;
    z-index: 10;
    backdrop-filter: blur(10px);
        background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.brand-logo {
    font-family: 'Oswald', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.brand-logo:hover {
    color: var(--accent-orange);
}

.back-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--accent-orange);
}

/* Main Container */
.login-container {
    z-index: 5;
    width: 100%;
    max-width: 450px;
    padding: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Login Card */
.login-card {
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 20px 20px 0 0;
}

/* Title */
.login-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 10px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    text-align: center;
    color: var(--text-dark);
    margin-bottom: 40px;
    font-size: 1rem;
}

/* Form Groups */
.form-group {
    position: relative;
    margin-bottom: 30px;
}

.form-input {
    width: 100%;
    padding: 15px 20px 15px 50px; 
    font-size: 1rem;
        background: var(--primary-white);
            border: 2px solid var(--light-gray);
            color: var(--text-dark);
            border-radius: 10px;
            transition: all 0.3s ease;
}

.form-input:focus {
    border-color: var(--accent-orange);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

.form-input:valid {
}

.form-input.error {
    border-color: var(--accent-red);
    animation: shake 0.5s ease;
}

@keyframes shake {

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

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.form-input::placeholder {
    color: var(--light-gray);
    opacity: 0.7;
}

/* Floating Labels */
.floating-label {
    position: absolute;
    top: 50%;
    left: 50px;
    transform: translateY(-50%);
    color: var(--text-dark);
    font-size: 1rem;
    pointer-events: none;
    transition: all 0.3s ease;
    background: transparent;
    padding: 0 8px;
}

.form-input:focus+.floating-label,
.form-input:valid+.floating-label {
    top: -10px;
    left: 15px;
    font-size: 0.85rem;
    color: #ffffff;
    background:var(--accent-orange);
}

/* Input Icons */
.input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dark);
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.form-input:focus~.input-icon {
    color: var(--accent-orange);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.password-toggle:hover {
    color: var(--accent-orange);
    transform: translateY(-50%) scale(1.1);
}

/* Remember Me Checkbox */
.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    user-select: none;
}

.custom-checkbox {
    position: relative;
    margin-right: 12px;
}

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

.checkmark {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--light-gray);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
    cursor: pointer;
}

.custom-checkbox input:checked+.checkmark {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.custom-checkbox input:checked+.checkmark::after {
    opacity: 1;
}

.remember-label {
    color: var(--text-dark);
    font-size: 0.9rem;
    cursor: pointer;
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 15px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 12px;
    color: var(--primary-white);
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 25px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(255, 107, 53, 0.4);
}

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

.login-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

/* Loading Spinner */
.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

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

    100% {
        transform: rotate(360deg);
    }
}

.login-btn.loading .spinner {
    display: inline-block;
}

.login-btn.loading .btn-text {
    opacity: 0.7;
}

/* Additional Links */
.additional-links {
    text-align: center;
}

.link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.9rem;
    margin: 0 10px;
    transition: all 0.3s ease;
    position: relative;
}

.link:hover {
    color: var(--accent-orange);
}

.link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 50%;
    background: var(--accent-orange);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.link:hover::after {
    width: 100%;
}

/* Error Messages */
.error-message {
    color: var(--accent-red);
    font-size: 0.8rem;
    margin-top: 5px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.error-message.show {
    opacity: 1;
    transform: translateY(0);
}

/* Success Message */
.success-message {
    background: rgba(40, 167, 69, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    opacity: 1;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.success-message.show {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.login-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    backdrop-filter: blur(10px);
    z-index: 10;
        background: var(--text-dark);
            text-align: center;
            padding: 40px 0;
            color: var(--primary-white);
}

.footer-text {
    color: var(--primary-white);
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    background: var(--light-gray);
    color: var(--text-dark);
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-orange);
    color: var(--primary-white);
    transform: scale(1.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        max-width: 100%;
        padding: 15px;
    }

    .login-card {
        padding: 30px 25px;
    }

    .login-title {
        font-size: 2rem;
    }

    .login-header,
    .login-footer {
        padding: 15px;
    }

    .form-input {
        padding: 12px 18px 12px 45px;
    }

    .floating-label {
        left: 45px;
    }

    .input-icon {
        left: 15px;
    }

    .password-toggle {
        right: 15px;
    }
}

@media (max-width: 480px) {
    .login-title {
        font-size: 1.8rem;
    }

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

    .additional-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
}

/* Accessibility */
.form-input:focus {
    outline: 2px solid var(--accent-orange);
    outline-offset: 2px;
}

.login-btn:focus {
    outline: 2px solid var(--accent-orange);
    outline-offset: 2px;
}

/* Dark theme scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-orange);
    border-radius: 4px;
}