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

html {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

:root {
    --bg-login: #F5F5F0;
    --card-login: #FFFFFF;
    --text-login: #1E293B;
    --accent-login: #00C4B4;
    --accent-glow-login: rgba(0, 196, 180, 0.2);
    --input-bg: #FFFFFF;
    --input-border: #E2E8F0;
    color-scheme: light;
}

body.dark-mode {
    --bg-login: #0d1117;
    --card-login: #161b22;
    --text-login: #e6edf3;
    --accent-login: #00C4B4;
    --accent-glow-login: rgba(0, 196, 180, 0.25);
    --input-bg: rgba(13, 17, 23, 0.8);
    --input-border: rgba(48, 54, 61, 0.8);
    color-scheme: dark;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-login);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 2rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow: hidden;
    color: var(--text-login);
    transition: background-color 0.4s ease, color 0.4s ease;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 30% 20%, var(--accent-glow-login) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, var(--accent-glow-login) 0%, transparent 50%);
    z-index: 0;
}

body::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
    animation: pulse 20s ease-in-out infinite;
    z-index: 0;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1) rotate(180deg);
        opacity: 0.5;
    }
}

.login-container {
    width: 100%;
    max-width: 450px;
    position: relative;
    z-index: 1;
}

.theme-toggle-card {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10;
}

.theme-btn {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--accent-login);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.theme-btn:hover {
    transform: rotate(15deg) scale(1.1);
    background: var(--accent-login);
    color: #FFFFFF;
    border-color: var(--accent-login);
    box-shadow: 0 6px 16px var(--accent-glow-login);
}

.login-card {
    position: relative;
    background: var(--card-login);
    backdrop-filter: blur(30px);
    border-radius: 2rem;
    padding: 3rem;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.1),
                0 0 0 1px var(--accent-glow-login),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid var(--accent-glow-login);
    animation: slideUp 0.6s ease-out;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

body.dark-mode .login-card {
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.5),
                0 0 0 1px var(--accent-glow-login),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-container {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-img {
    width: 135px;
    height: 135px;
    animation: logoFloat 3s ease-in-out infinite;
    transition: transform 0.5s ease;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.login-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-login) 0%, var(--accent-login) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: rgba(0, 212, 170, 0.7);
    font-size: 1rem;
    font-weight: 500;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(230, 237, 243, 0.9);
    font-size: 0.95rem;
    font-weight: 500;
}

.form-group label i {
    font-size: 1.1rem;
    color: var(--accent-login);
}

.form-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 0.75rem;
    color: var(--text-login);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    outline: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    color-scheme: light;
}

body.dark-mode .form-group input {
    color-scheme: dark;
}

.form-group input::placeholder {
    color: rgba(110, 118, 129, 0.8);
    opacity: 1;
}

.form-group input:focus {
    border-color: var(--accent-login);
    background: var(--input-bg);
    box-shadow: 0 0 0 4px var(--accent-glow-login),
                0 4px 12px rgba(0, 0, 0, 0.1);
}

body.dark-mode .form-group input:focus {
    box-shadow: 0 0 0 4px var(--accent-glow-login),
                0 4px 12px rgba(0, 0, 0, 0.3);
}

.form-group input:-webkit-autofill,
.form-group input:-webkit-autofill:hover,
.form-group input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px #0d1117 inset !important;
    -webkit-text-fill-color: #e6edf3 !important;
    border-color: rgba(48, 54, 61, 0.8) !important;
    transition: background-color 5000s ease-in-out 0s;
}

.form-group input:invalid:not(:placeholder-shown) {
    border-color: rgba(248, 81, 73, 0.5);
}

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

.password-input-wrapper input {
    padding-right: 3rem;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    background: transparent;
    border: none;
    color: rgba(139, 148, 158, 0.8);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
    font-size: 1.2rem;
}

.password-toggle:hover {
    color: var(--accent-login);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(139, 148, 158, 0.9);
    cursor: pointer;
    user-select: none;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #00C4B4;
}

.login-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--accent-login);
    border: none;
    border-radius: 0.75rem;
    color: #FFFFFF;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
    margin-top: 0.5rem;
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.login-btn:hover {
    background: linear-gradient(135deg, #00BFA5 0%, #00C4B4 100%);
    box-shadow: 0 6px 20px rgba(0, 212, 170, 0.45);
    transform: translateY(-2px);
    animation: buttonPulse 2s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 6px 20px rgba(0, 212, 170, 0.45);
    }
    50% {
        box-shadow: 0 6px 25px rgba(0, 212, 170, 0.6);
    }
}

.login-btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 10px rgba(0, 212, 170, 0.4);
    animation: none;
}

.login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    animation: none;
}

.login-btn i {
    transition: transform 0.3s ease;
}

.login-btn:hover i {
    transform: translateX(3px);
}

.error-message {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(248, 81, 73, 0.12);
    border: 1px solid rgba(248, 81, 73, 0.3);
    border-radius: 0.75rem;
    color: #f85149;
    font-size: 0.9rem;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-message i {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(48, 54, 61, 0.5);
}

.login-footer p {
    color: rgba(139, 148, 158, 0.6);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
        border-radius: 1.5rem;
    }

    .login-header h1 {
        font-size: 2rem;
    }

    .logo-img {
        width: 60px;
        height: 60px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem 1rem;
    }

    .login-header h1 {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }
}

/* Invertir logo en modo oscuro */
body.dark-mode .logo-img {
    filter: none !important;
}