/* ===== MODERN LOGIN CSS ===== */
/* Design Elegante e Moderno para Login */

:root {
    /* Cores do Login */
    --login-primary: #6366f1;
    --login-primary-dark: #4f46e5;
    --login-secondary: #10b981;
    --login-accent: #f59e0b;
    --login-danger: #ef4444;
    
    /* Cores Neutras */
    --login-white: #ffffff;
    --login-gray-50: #f9fafb;
    --login-gray-100: #f3f4f6;
    --login-gray-200: #e5e7eb;
    --login-gray-300: #d1d5db;
    --login-gray-400: #9ca3af;
    --login-gray-500: #6b7280;
    --login-gray-600: #4b5563;
    --login-gray-700: #374151;
    --login-gray-800: #1f2937;
    --login-gray-900: #111827;
    
    /* Sombras */
    --login-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --login-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --login-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --login-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Bordas */
    --login-radius-sm: 0.375rem;
    --login-radius-md: 0.5rem;
    --login-radius-lg: 0.75rem;
    --login-radius-xl: 1rem;
    --login-radius-2xl: 1.5rem;
    
    /* Transições */
    --login-transition: 0.3s ease-in-out;
}

/* ===== RESET E BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    position: relative;
    overflow-x: hidden;
}

/* ===== BACKGROUND ANIMATION ===== */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.3) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
    z-index: -1;
}

@keyframes backgroundShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-10px, -10px) rotate(1deg); }
    50% { transform: translate(10px, -5px) rotate(-1deg); }
    75% { transform: translate(-5px, 10px) rotate(0.5deg); }
}

/* ===== LOGIN CONTAINER ===== */
.login-container {
    background: var(--login-white);
    border-radius: var(--login-radius-2xl);
    box-shadow: var(--login-shadow-xl);
    overflow: hidden;
    width: 100%;
    max-width: 450px;
    position: relative;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--login-primary), var(--login-secondary), var(--login-accent));
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ===== LOGIN HEADER ===== */
.login-header {
    padding: 2.5rem 2rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--login-gray-50) 0%, var(--login-white) 100%);
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--login-primary), var(--login-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--login-shadow-lg);
    position: relative;
    overflow: hidden;
}

.login-logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: logoShine 3s ease-in-out infinite;
}

@keyframes logoShine {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: 100%; }
}

.login-logo i {
    font-size: 2rem;
    color: var(--login-white);
    z-index: 1;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--login-gray-900);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--login-primary), var(--login-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--login-gray-600);
    font-size: 1rem;
    font-weight: 400;
}

/* ===== LOGIN FORM ===== */
.login-form {
    padding: 0 2rem 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--login-gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    transition: color var(--login-transition);
}

.form-control {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--login-gray-200);
    border-radius: var(--login-radius-lg);
    font-size: 1rem;
    transition: all var(--login-transition);
    background: var(--login-white);
    position: relative;
}

.form-control:focus {
    outline: none;
    border-color: var(--login-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-control:focus + .form-icon {
    color: var(--login-primary);
    transform: scale(1.1);
}

.form-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-gray-400);
    font-size: 1.25rem;
    transition: all var(--login-transition);
    z-index: 2;
}

.form-control:focus ~ .form-icon {
    color: var(--login-primary);
}

/* ===== CAPTCHA SECTION ===== */
.captcha-section {
    background: var(--login-gray-50);
    border: 2px solid var(--login-gray-200);
    border-radius: var(--login-radius-lg);
    padding: 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
    transition: all var(--login-transition);
}

.captcha-section:focus-within {
    border-color: var(--login-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.captcha-title {
    font-weight: 600;
    color: var(--login-gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.captcha-code {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--login-primary);
    background: var(--login-white);
    padding: 0.5rem 1rem;
    border-radius: var(--login-radius-md);
    border: 2px solid var(--login-gray-200);
    margin-bottom: 1rem;
    letter-spacing: 0.2em;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.captcha-code::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    animation: captchaShine 2s ease-in-out infinite;
}

@keyframes captchaShine {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: 100%; }
}

.captcha-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--login-gray-200);
    border-radius: var(--login-radius-md);
    font-size: 1rem;
    text-align: center;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.2em;
    transition: all var(--login-transition);
}

.captcha-input:focus {
    outline: none;
    border-color: var(--login-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ===== LOGIN BUTTON ===== */
.login-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--login-primary), var(--login-primary-dark));
    color: var(--login-white);
    border: none;
    border-radius: var(--login-radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--login-transition);
    position: relative;
    overflow: hidden;
    margin-bottom: 1rem;
}

.login-btn::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-in-out;
}

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

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--login-shadow-xl);
}

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

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

/* ===== ERROR MESSAGES ===== */
.error-message {
    background: #fef2f2;
    border: 1px solid var(--login-danger);
    color: #991b1b;
    padding: 1rem;
    border-radius: var(--login-radius-md);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.success-message {
    background: #ecfdf5;
    border: 1px solid var(--login-secondary);
    color: #065f46;
    padding: 1rem;
    border-radius: var(--login-radius-md);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===== FOOTER ===== */
.login-footer {
    padding: 1.5rem 2rem;
    text-align: center;
    background: var(--login-gray-50);
    border-top: 1px solid var(--login-gray-200);
}

.footer-text {
    color: var(--login-gray-600);
    font-size: 0.875rem;
}

.footer-link {
    color: var(--login-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--login-transition);
}

.footer-link:hover {
    color: var(--login-primary-dark);
    text-decoration: underline;
}

/* ===== LOADING STATE ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--login-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 480px) {
    .login-container {
        margin: 1rem;
        border-radius: var(--login-radius-xl);
    }
    
    .login-header {
        padding: 2rem 1.5rem 1.5rem;
    }
    
    .login-form {
        padding: 0 1.5rem 1.5rem;
    }
    
    .login-title {
        font-size: 1.75rem;
    }
    
    .login-logo {
        width: 60px;
        height: 60px;
    }
    
    .login-logo i {
        font-size: 1.5rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-container {
    animation: fadeInUp 0.6s ease-out;
}

.form-group {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }
.form-group:nth-child(4) { animation-delay: 0.4s; }

.login-btn {
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

/* ===== FLOATING ELEMENTS ===== */
.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(10px) rotate(240deg); }
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--login-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--login-gray-400);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--login-gray-500);
}