/* CSS VARIABLES - NEON CYBERPUNK NUTRITION */
:root {
    --bg-dark: #060913;
    --bg-card: #0f1424;
    --bg-card-hover: #151c33;
    --primary: #00f5d4; 
    --primary-glow: rgba(0, 245, 212, 0.25);
    --secondary: #9d4edd; 
    --secondary-glow: rgba(157, 78, 221, 0.25);
    --accent: #ff007f; 
    --text-light: #f3f4f6;
    --text-muted: #9ca3af;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

/* RESET & DEFENSE AGAINST OVERFLOW */
html, body {
    width: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Plus Jakarta Sans', sans-serif;
    scroll-behavior: smooth;
}

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

a { text-decoration: none; }

/* BG BLOBS */
.blob-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.blob {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: pulseBlob 8s infinite alternate;
}
.blob-1 { top: 5%; left: -5%; background-color: var(--primary); }
.blob-2 { top: 45%; right: -5%; background-color: var(--secondary); animation-delay: 2s; }
.blob-3 { bottom: 5%; left: 15%; background-color: var(--accent); animation-delay: 4s; }

@keyframes pulseBlob {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.3) translate(30px, 30px); }
}

/* WEBKIT SCROLLBAR */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: #1f2a4a; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* GLASS NAVBAR */
header {
    background: rgba(6, 9, 19, 0.75);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-family: 'Syne', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

.logo span {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-links a:hover { color: #fff; }

.btn-nav-cta {
    background: linear-gradient(135deg, var(--primary), #00d2b4);
    color: #000 !important;
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 5px 15px var(--primary-glow);
}

.btn-nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 245, 212, 0.4);
}

/* HAMBURGER */
.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #fff;
    cursor: pointer;
    z-index: 1001;
    transition: var(--transition);
}

/* MOBILE SIDEBAR */
.sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100vh;
    background: rgba(15, 20, 36, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    z-index: 999;
    padding: 100px 30px;
    display: flex;
    flex-direction: column;
    gap: 25px;
    transition: var(--transition);
    border-left: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar.active { right: 0; }

.sidebar a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 700;
    transition: var(--transition);
}

.sidebar a:hover {
    color: var(--primary);
    padding-left: 8px;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0,0.6);
    z-index: 998;
    display: none;
}

.sidebar-overlay.active { display: block; }

/* HERO SECTION */
.hero {
    padding: 120px 5% 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 90vh;
    gap: 40px;
}

.hero-content {
    flex: 1.2;
    animation: slideUp 0.8s ease-out;
}

.hero-tag {
    background: rgba(0, 245, 212, 0.1);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 245, 212, 0.2);
}

.hero-content h1 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2.2rem, 8vw, 3.5rem);
    line-height: 1.15;
    margin-bottom: 20px;
    font-weight: 800;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    line-height: 1.7;
}

.hero-image-container {
    flex: 0.8;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    padding: 20px;
}

.hero-image {
    width: 100%;
    max-width: 380px;
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

/* NUTRITION INFO */
.nutrition-info {
    padding: 80px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 15px;
}

.section-header h2 span { color: var(--primary); }
.section-header p { color: var(--text-muted); font-size: 1rem; }

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.card {
    background-color: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    background-color: var(--bg-card-hover);
    border-color: rgba(0, 245, 212, 0.2);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 25px;
}

.card-1 .card-icon { background: rgba(0, 245, 212, 0.1); color: var(--primary); }
.card-2 .card-icon { background: rgba(157, 78, 221, 0.15); color: var(--secondary); }
.card-3 .card-icon { background: rgba(255, 0, 127, 0.1); color: var(--accent); }

.card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 15px; }
.card p { color: var(--text-muted); line-height: 1.6; font-size: 0.95rem; }


/* ========================================== */
/* RE-ENGINEERED CALCULATOR SECTION (ULTRA RESPONSIVE) */
/* ========================================== */
.calculator-section {
    padding: 60px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.calc-wrapper {
    background: linear-gradient(135deg, rgba(15, 20, 36, 0.9), rgba(21, 28, 51, 0.9));
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    padding: 24px; /* Default kecil untuk mobile agar tidak memakan space luar */
    display: flex;
    flex-direction: column; /* Menumpuk vertikal di mobile */
    gap: 30px;
    box-shadow: var(--shadow);
    width: 100%;
    overflow: hidden; /* Mencegah kebocoran pixel */
}

.calc-info {
    width: 100%;
}

.calc-info h2 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(1.8rem, 5vw, 2.4rem); /* Dynamic Font Size */
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 15px;
}

.calc-info h2 span {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.calc-info p { 
    color: var(--text-muted); 
    line-height: 1.6; 
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.calc-visual {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: block;
    object-fit: cover;
}

.calc-form { 
    display: flex; 
    flex-direction: column; 
    gap: 20px; 
    width: 100%;
}

.form-group { 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
    width: 100%;
}

.form-group label { 
    font-weight: 700; 
    font-size: 0.8rem; 
    text-transform: uppercase; 
    letter-spacing: 0.5px; 
    color: var(--text-light);
}

.gender-select { 
    display: flex; 
    gap: 10px; 
    width: 100%;
}

.gender-btn {
    flex: 1;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    color: var(--text-muted);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.gender-btn.active {
    background: rgba(0, 245, 212, 0.08);
    border-color: var(--primary);
    color: var(--primary);
}

/* Form Row: Satu kolom di HP, Dua kolom di Tablet/Desktop */
.form-row { 
    display: flex;
    flex-direction: column;
    gap: 15px; 
    width: 100%;
}

.form-group input, .form-group select {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 16px;
    border-radius: 12px;
    color: #fff;
    font-size: 0.95rem;
    outline: none;
    width: 100%; /* Menghalangi desakan pixel keluar */
    box-sizing: border-box;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 10px rgba(0, 245, 212, 0.1);
}

.btn-calc {
    background: linear-gradient(135deg, var(--secondary), #8b3dc7);
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
}

.btn-calc:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(157, 78, 221, 0.4);
}

/* MEDIA QUERIES KHUSUS KALKULATOR */
@media (min-width: 480px) {
    .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr; /* Membagi kolom dengan seimbang jika HP agak lebar */
        gap: 15px;
    }
}

@media (min-width: 992px) {
    .calculator-section {
        padding: 80px 5%;
    }
    .calc-wrapper {
        display: grid;
        grid-template-columns: 1fr 1.1fr; /* Grid Desktop */
        padding: 45px;
        gap: 40px;
    }
}
/* ========================================== */


/* RESULT PANEL */
.result-panel {
    grid-column: span 2;
    background: rgba(255, 255, 255, 0.01);
    border-left: 4px solid var(--primary);
    border-radius: 16px;
    padding: 25px;
    display: none;
    animation: fadeIn 0.5s ease-out;
    width: 100%;
}

.result-panel.active { display: block; }
.result-grid { display: grid; grid-template-columns: 1fr; gap: 25px; align-items: center; }

@media (min-width: 768px) {
    .result-grid { grid-template-columns: 1fr 1.3fr; gap: 30px; }
}

.result-summary { text-align: center; }
.result-summary h3 { font-size: 0.9rem; color: var(--text-muted); text-transform: uppercase; margin-bottom: 5px; }

.calories-output {
    font-size: clamp(2.5rem, 6vw, 3.2rem);
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    font-family: 'Syne', sans-serif;
    margin-bottom: 5px;
}

.result-bars { display: flex; flex-direction: column; gap: 15px; width: 100%; }
.bar-container { width: 100%; }
.bar-labels { display: flex; justify-content: space-between; font-weight: 700; font-size: 0.85rem; margin-bottom: 5px; }
.bar-bg { background: rgba(255, 255, 255, 0.05); height: 8px; border-radius: 50px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 50px; width: 0%; transition: width 1.2s ease-in-out; }
.fill-carb { background: var(--primary); }
.fill-protein { background: var(--secondary); }
.fill-fat { background: var(--accent); }

/* FOOTER DESIGN */
footer {
    background-color: #03050a;
    padding: 60px 5% 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (min-width: 992px) {
    .footer-grid { grid-template-columns: 1.2fr 0.8fr 1fr; }
}

.footer-col h4 {
    font-family: 'Syne', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
    position: relative;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 30px;
    height: 2px;
    background-color: var(--primary);
}

.footer-col p { color: var(--text-muted); line-height: 1.6; font-size: 0.9rem; }

.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 5px; }

.quote-box {
    background: rgba(255, 255, 255, 0.01);
    border: 1px dashed rgba(255, 255, 255, 0.08);
    padding: 20px;
    border-radius: 12px;
}

.quote-box span {
    display: block;
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.socials { display: flex; gap: 12px; margin-top: 20px; }
.socials a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
}
.socials a:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-3px); }

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-bottom a { color: var(--primary); text-decoration: none; }

/* GENERAL ANIMATIONS */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* GENERAL MEDIA QUERIES */
@media (max-width: 992px) {
    .hero { flex-direction: column; text-align: center; padding-top: 100px; gap: 40px; }
    .hero-content { display: flex; flex-direction: column; align-items: center; }
    .hero-image-container { display: none; } /* Sembunyikan gambar dekoratif di mobile agar fokus ke tulisan */
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: block; }
    .footer-bottom { flex-direction: column; text-align: center; }
}