:root {
    --yellow-primary: #D4940B;
    --yellow-light: #F5D062;
    --yellow-soft: #FFF8E7;
    --yellow-accent: #E8A817;
    --yellow-dark: #8B5E00;
    --yellow-gradient: linear-gradient(135deg, #E8A817 0%, #D4940B 50%, #C2850A 100%);
    --bg-page: #0F2923;
    --bg-card: #FFFFFF;
    --bg-input: #FAFAFA;
    --text-dark: #1C1C1E;
    --text-medium: #4A4A50;
    --text-light: #8E8E93;
    --border-light: #E8E8EC;
    --border-input: #E8E8EC;
    --shadow-card: 0 20px 48px rgba(0, 0, 0, 0.15);
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition-fast: 0.2s ease;
    --transition-color: 0.28s ease;
    --pattern-opacity: 0.15;
}

/* Dark mode */
body.dark-mode {
    --bg-page: #061612;
    --bg-card: #1C1C1E;
    --bg-input: #2A2A2D;
    --text-dark: #E8E8EC;
    --text-medium: #B8B8BE;
    --text-light: #8A8A90;
    --border-light: #2E2E32;
    --border-input: #353538;
    --shadow-card: 0 20px 48px rgba(0, 0, 0, 0.40);
    --yellow-soft: #2E2618;
    --pattern-opacity: 0.18;
}

    body.dark-mode .input-wrapper input {
        background: var(--bg-input);
        color: #E8E8EC;
    }

        body.dark-mode .input-wrapper input:focus {
            background: #252528;
        }

    body.dark-mode .toggle-password {
        color: #8A8A90;
    }

        body.dark-mode .toggle-password:hover {
            color: #F5D062;
        }

    body.dark-mode .theme-toggle-btn {
        background: #2A2A2D;
        border-color: #353538;
        color: #C0C0C6;
    }

        body.dark-mode .theme-toggle-btn:hover {
            background: #2E2618;
            border-color: #8B5E00;
            color: #F5D062;
        }

    body.dark-mode .validation-summary-errors {
        background: #2E1C1C;
        border-color: #5C2020;
        color: #F87171;
    }

    body.dark-mode .field-validation-error {
        color: #F87171;
    }

    body.dark-mode .login-subtitle {
        color: #8A8A90;
    }

    body.dark-mode .institution-logo-img {
        filter: brightness(1.1);
    }

    body.dark-mode .sge-badge {
        opacity: 0.5;
    }

        body.dark-mode .sge-badge i {
            color: #F5D062;
        }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
    transition: background var(--transition-color);
    position: relative;
    overflow-x: hidden;
}

/* SVG Background Pattern */
.bg-pattern {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: var(--pattern-opacity);
    transition: opacity var(--transition-color);
    background-repeat: repeat;
    background-size: 240px 240px;
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

body:not(.dark-mode) .bg-pattern {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'%3E%3Cg fill='none' stroke='%23F5D062' stroke-width='1.8' stroke-opacity='0.9'%3E%3Ccircle cx='20' cy='20' r='8'/%3E%3Ccircle cx='120' cy='20' r='8'/%3E%3Ccircle cx='220' cy='20' r='8'/%3E%3Ccircle cx='70' cy='120' r='8'/%3E%3Ccircle cx='170' cy='120' r='8'/%3E%3Ccircle cx='20' cy='220' r='8'/%3E%3Ccircle cx='120' cy='220' r='8'/%3E%3Ccircle cx='220' cy='220' r='8'/%3E%3Cpath d='M120 40 L120 100' /%3E%3Cpath d='M40 120 L100 120' /%3E%3Cpath d='M140 120 L200 120' /%3E%3Cpath d='M120 140 L120 200' /%3E%3Cpath d='M40 40 L50 50' /%3E%3Cpath d='M200 40 L190 50' /%3E%3Cpath d='M40 200 L50 190' /%3E%3Cpath d='M200 200 L190 190' /%3E%3C/g%3E%3C/svg%3E");
}

body.dark-mode .bg-pattern {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'%3E%3Cg fill='none' stroke='%23E8C547' stroke-width='1.8' stroke-opacity='0.9'%3E%3Ccircle cx='20' cy='20' r='8'/%3E%3Ccircle cx='120' cy='20' r='8'/%3E%3Ccircle cx='220' cy='20' r='8'/%3E%3Ccircle cx='70' cy='120' r='8'/%3E%3Ccircle cx='170' cy='120' r='8'/%3E%3Ccircle cx='20' cy='220' r='8'/%3E%3Ccircle cx='120' cy='220' r='8'/%3E%3Ccircle cx='220' cy='220' r='8'/%3E%3Cpath d='M120 40 L120 100' /%3E%3Cpath d='M40 120 L100 120' /%3E%3Cpath d='M140 120 L200 120' /%3E%3Cpath d='M120 140 L120 200' /%3E%3Cpath d='M40 40 L50 50' /%3E%3Cpath d='M200 40 L190 50' /%3E%3Cpath d='M40 200 L50 190' /%3E%3Cpath d='M200 200 L190 190' /%3E%3C/g%3E%3C/svg%3E");
}

/* Theme toggle */
.theme-toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-light);
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-medium);
    font-size: 18px;
    transition: var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

    .theme-toggle-btn:hover {
        background: var(--yellow-soft);
        border-color: var(--yellow-light);
        color: var(--yellow-dark);
    }

    .theme-toggle-btn i {
        transition: transform 0.35s ease;
    }

body.dark-mode .theme-toggle-btn i {
    transform: rotate(180deg);
}

/* Login container */
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 36px 32px 32px;
    border: 1px solid var(--border-light);
    transition: background var(--transition-color), border-color var(--transition-color), box-shadow var(--transition-color);
    backdrop-filter: blur(4px);
}

/* Header — logotipo da instituição */
.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.institution-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.institution-logo-img {
    width: 240px;
    height: auto;
    object-fit: contain;
    transition: transform 0.3s ease, filter var(--transition-color);
    border-radius: var(--radius-sm);
}

    .institution-logo-img:hover {
        transform: scale(1.03);
    }

.login-subtitle {
    color: var(--text-light);
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color var(--transition-color);
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

    .form-group label {
        display: block;
        font-size: 13px;
        font-weight: 600;
        color: var(--text-medium);
        margin-bottom: 6px;
        letter-spacing: -0.01em;
        transition: color var(--transition-color);
    }

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

    .input-wrapper .input-icon {
        position: absolute;
        left: 14px;
        font-size: 15px;
        color: var(--text-light);
        transition: color var(--transition-fast);
        z-index: 2;
        pointer-events: none;
    }

    .input-wrapper input {
        width: 100%;
        padding: 13px 44px 13px 42px;
        border: 1px solid var(--border-input);
        border-radius: var(--radius-md);
        font-family: 'Inter', sans-serif;
        font-size: 14px;
        background: var(--bg-input);
        color: var(--text-dark);
        transition: var(--transition-fast), background var(--transition-color), color var(--transition-color);
        outline: none;
        line-height: 1.4;
    }

        .input-wrapper input:focus {
            border-color: var(--yellow-accent);
            box-shadow: 0 0 0 3px rgba(232, 168, 23, 0.08);
            background: var(--bg-card);
        }

            .input-wrapper input:focus ~ .input-icon {
                color: var(--yellow-dark);
            }

.toggle-password {
    position: absolute;
    right: 12px;
    cursor: pointer;
    color: var(--text-light);
    font-size: 15px;
    background: none;
    border: none;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: color var(--transition-fast);
    border-radius: 50%;
    min-width: 32px;
    min-height: 32px;
}

    .toggle-password:hover {
        color: var(--yellow-dark);
        background: rgba(232, 168, 23, 0.06);
    }

.forgot-password {
    display: block;
    text-align: right;
    font-size: 12px;
    font-weight: 500;
    color: var(--yellow-dark);
    text-decoration: none;
    margin-top: 6px;
    transition: var(--transition-fast);
}

    .forgot-password:hover {
        color: var(--yellow-accent);
        text-decoration: underline;
    }

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check-input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--yellow-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.form-check-label {
    margin: 0;
    margin-top: 4px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-medium);
    cursor: pointer;
    transition: color var(--transition-color);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--yellow-gradient);
    border: none;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: #1C1C1E;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(212, 148, 11, 0.3);
    margin-top: 10px;
    letter-spacing: -0.01em;
}

    .btn-login:hover {
        transform: translateY(-1px);
        box-shadow: 0 6px 18px rgba(212, 148, 11, 0.4);
    }

    .btn-login:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(212, 148, 11, 0.3);
    }

/* Footer — SGE-M sutil */
.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
    font-size: 11px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    transition: color var(--transition-color), border-color var(--transition-color);
}

    .login-footer a {
        color: var(--text-light);
        text-decoration: none;
        font-weight: 500;
        transition: color var(--transition-fast);
    }

        .login-footer a:hover {
            color: var(--yellow-accent);
        }

.footer-sep {
    font-size: 8px;
    opacity: 0.5;
}

.sge-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: 700;
    color: var(--text-light);
    opacity: 0.65;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: opacity var(--transition-color);
}

    .sge-badge i {
        font-size: 10px;
        color: var(--yellow-accent);
        opacity: 0.7;
    }

/* Validação */
.field-validation-error {
    color: #DC2626;
    font-size: 12px;
    margin-top: 4px;
    font-weight: 500;
}

.validation-summary-errors {
    color: #DC2626;
    font-size: 13px;
    margin-bottom: 16px;
    padding: 10px 14px;
    background: #FEF2F2;
    border-radius: var(--radius-sm);
    border: 1px solid #FECACA;
}

    .validation-summary-errors ul {
        list-style: none;
        padding-left: 0;
    }

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        padding: 28px 20px 26px;
        border-radius: var(--radius-md);
    }

    .institution-logo-img {
        width: 110px;
    }

    .login-subtitle {
        font-size: 11.5px;
    }

    .theme-toggle-btn {
        top: 12px;
        right: 12px;
        width: 38px;
        height: 38px;
        font-size: 16px;
    }

    .login-footer {
        gap: 6px;
    }
}