/* ==========================================================================
   AET ALUMNI PORTAL - CUSTOM STYLESHEET
   Tema: Premium Blue & Red (Berdasarkan Logo AET)
   ========================================================================== */

/* --- 1. ROOT VARIABLES --- */
:root {
    /* Warna Utama Logo */
    --aet-blue: #0047AB;       /* Biru Navy / Biru Logo */
    --aet-red: #EE2C2C;        /* Merah Logo */
    
    /* Warna Latar & Teks */
    --aet-light: #F8FAFC;      /* Abu-abu sangat muda agak kebiruan untuk background */
    --aet-white: #FFFFFF;      /* Putih bersih */
    --aet-dark: #1E293B;       /* Hitam kebiruan untuk teks utama (lebih soft dari hitam pekat) */
    --aet-gray: #64748B;       /* Abu-abu untuk teks sekunder/muted */
    
    /* Border & Shadow */
    --aet-border: rgba(0, 71, 171, 0.1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 25px rgba(0, 71, 171, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 71, 171, 0.05);
}

/* --- 2. GLOBAL STYLES --- */
body {
    background-color: var(--aet-light);
    color: var(--aet-dark);
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    overflow-x: hidden; /* Mencegah scroll horizontal */
}

a {
    transition: all 0.2s ease-in-out;
}

/* --- 3. ANIMATIONS --- */
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
    opacity: 0;
    transform: translateY(30px);
}

/* Delay class untuk memunculkan elemen secara bergantian */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

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

/* --- 4. CARD STYLES (PREMIUM GLASSMORPHISM) --- */
.card-premium {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--aet-border);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-premium:hover {
    box-shadow: var(--shadow-lg);
}

/* --- 5. BUTTON STYLES --- */
.btn-aet-blue {
    background-color: var(--aet-blue);
    color: var(--aet-white);
    border: none;
    border-radius: 50px;
    padding: 10px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-aet-blue:hover, .btn-aet-blue:focus {
    background-color: #003580; /* Biru lebih gelap saat di-hover */
    color: var(--aet-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 71, 171, 0.2);
}

.btn-aet-red {
    background-color: var(--aet-red);
    color: var(--aet-white);
    border: none;
    border-radius: 50px;
    padding: 10px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-aet-red:hover, .btn-aet-red:focus {
    background-color: #C62828; /* Merah lebih gelap saat di-hover */
    color: var(--aet-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(238, 44, 44, 0.2);
}

/* Tombol Aksi di Timeline (Like/Comment) */
.action-btn {
    transition: all 0.2s ease;
    border-radius: 8px;
    background-color: transparent;
}

.action-btn:hover {
    background-color: rgba(0, 71, 171, 0.05);
    color: var(--aet-blue) !important;
}

/* --- 6. FORM & INPUT STYLES --- */
.form-control {
    border-radius: 10px;
    border: 1px solid #E2E8F0;
    padding: 12px 15px;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--aet-blue);
    box-shadow: 0 0 0 0.25rem rgba(0, 71, 171, 0.15);
    background-color: #FFFFFF;
}

/* Kustomisasi Form Floating Bootstrap */
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--aet-blue);
    transform: scale(0.85) translateY(-0.75rem) translateX(0.15rem);
}

/* --- 7. NAVBAR STYLES --- */
.navbar-aet {
    background-color: var(--aet-white);
    border-bottom: 2px solid var(--aet-blue);
    box-shadow: var(--shadow-sm);
    padding: 0.8rem 0;
}

.navbar-aet .nav-link {
    color: var(--aet-gray);
    font-weight: 500;
    transition: color 0.2s ease;
}

.navbar-aet .nav-link:hover, 
.navbar-aet .nav-link.active {
    color: var(--aet-blue);
}

/* --- 8. TIMELINE & COMPONENT SPECIFICS --- */
/* Badge Kategori Postingan */
.soft-badge {
    background-color: rgba(0, 71, 171, 0.1);
    color: var(--aet-blue);
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
}

/* Area Cover Profile di Sidebar Kiri */
.profile-cover {
    height: 75px; 
    background: linear-gradient(135deg, var(--aet-blue) 0%, #3366CC 100%);
}

/* Efek Hover untuk List Alumni di Sidebar Kanan */
.alumni-list-item {
    transition: background-color 0.2s ease;
    border-radius: 8px;
    padding: 8px;
}

.alumni-list-item:hover {
    background-color: rgba(0, 71, 171, 0.03);
}

/* Utilitas Kursor */
.cursor-pointer {
    cursor: pointer;
}