/* ============================================ */
/* DESIGN SYSTEM VARIABLES — SIAPN              */
/* ============================================ */

:root {
    /* --- Warna --- */
    --color-primary: #0d6e3b;        /* deep green */
    --color-primary-light: #198754;
    --color-primary-dark: #0a4f2a;
    --color-surface: #ffffff;
    --color-text-primary: #1e293b;
    --color-text-secondary: #475569;

    /* --- Spacing (Skala 4) --- */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;

    /* --- Typography --- */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;

    /* --- Radius --- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* --- Shadow --- */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.16);

    /* --- Transition --- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ============================================ */
/* NAVBAR SPECIFIC STYLES                       */
/* ============================================ */

.app-navbar {
    background: var(--color-primary);
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(2px);
    transition: box-shadow var(--transition-base), background var(--transition-base);
}

/* Brand */
.app-navbar .navbar-brand {
    font-size: var(--font-size-md);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: #fff;
    transition: opacity var(--transition-fast);
}
.app-navbar .navbar-brand:hover {
    opacity: 0.85;
}
.app-navbar .brand-text {
    font-weight: 700;
    font-size: var(--font-size-lg);
}

/* Nav Links */
.app-navbar .nav-link {
    color: rgba(255,255,255,0.75);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}
.app-navbar .nav-link:hover,
.app-navbar .nav-link:focus-visible {
    color: #ffffff;
    background: rgba(255,255,255,0.12);
    transform: translateY(-1px);
}
.app-navbar .nav-link.active {
    color: #ffffff;
    background: rgba(255,255,255,0.18);
    font-weight: 600;
}
.app-navbar .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: var(--radius-full);
}

/* Toggler */
.app-navbar .navbar-toggler {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}
.app-navbar .navbar-toggler:hover {
    background: rgba(255,255,255,0.10);
}
.app-navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 2px rgba(255,255,255,0.4);
}

/* User Greeting */
.app-navbar .user-greeting {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}
.app-navbar .user-greeting strong {
    font-weight: 600;
}

/* Logout Button */
.app-navbar .logout-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: #fff;
    background: transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.app-navbar .logout-btn:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.5);
    transform: scale(1.02);
}
.app-navbar .logout-btn:active {
    transform: scale(0.96);
}
.app-navbar .logout-btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* Mobile Responsive Overrides */
@media (max-width: 991.98px) {
    .app-navbar {
        padding-top: var(--space-1);
        padding-bottom: var(--space-1);
    }
    .app-navbar .navbar-collapse {
        background: rgba(13, 110, 59, 0.98);
        backdrop-filter: blur(8px);
        padding: var(--space-4) var(--space-3);
        border-radius: var(--radius-lg);
        margin-top: var(--space-2);
        box-shadow: var(--shadow-lg);
        border: 1px solid rgba(255,255,255,0.06);
    }
    .app-navbar .nav-link {
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-base);
        border-radius: var(--radius-md);
    }
    .app-navbar .nav-link.active::after {
        display: none;
    }
    .app-navbar .logout-btn {
        width: 100%;
        justify-content: center;
    }
}