@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--nxt-dark);
    background-color: var(--nxt-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--nxt-dark);
}

h1 { font-size: var(--text-6xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--nxt-gray-600);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-lg {
    max-width: var(--container-2xl);
}

.section {
    padding: var(--space-20) 0;
}

.section-sm {
    padding: var(--space-12) 0;
}

.section-lg {
    padding: var(--space-24) 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-gradient {
    background: linear-gradient(135deg, var(--nxt-blue-600), var(--nxt-red-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-blue {
    background: linear-gradient(135deg, var(--nxt-blue-500), var(--nxt-blue-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--nxt-blue-50);
    color: var(--nxt-blue-700);
    border: 1px solid var(--nxt-blue-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    letter-spacing: 0.025em;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-4);
    line-height: 1.15;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--nxt-gray-500);
    max-width: 640px;
    margin: 0 auto var(--space-12);
    line-height: 1.7;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    line-height: 1.5;
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn-lg svg {
    width: 18px;
    height: 18px;
}

.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;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--nxt-blue-600), var(--nxt-blue-700));
    color: var(--nxt-white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--nxt-blue-700), var(--nxt-blue-800));
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
    transform: translateY(-2px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--nxt-red-500), var(--nxt-red-600));
    color: var(--nxt-white);
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.btn-accent:hover {
    background: linear-gradient(135deg, var(--nxt-red-600), var(--nxt-red-700));
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.45);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border-color: var(--nxt-blue-600);
    color: var(--nxt-blue-600);
}

.btn-outline:hover {
    background: var(--nxt-blue-600);
    color: var(--nxt-white);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--nxt-white);
    color: var(--nxt-blue-700);
    box-shadow: var(--shadow-md);
}

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

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-lg);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--nxt-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--nxt-light-3);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: var(--nxt-blue-200);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-dark {
    background: var(--nxt-dark-2);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--nxt-white);
}

.card-dark p {
    color: var(--nxt-gray-400);
}

.card-gradient {
    background: linear-gradient(135deg, var(--nxt-blue-50), var(--nxt-white));
    border-color: var(--nxt-blue-100);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    font-size: 24px;
}

.card-icon-blue {
    background: var(--nxt-blue-50);
    color: var(--nxt-blue-600);
}

.card-icon-red {
    background: var(--nxt-red-50);
    color: var(--nxt-red-600);
}

/* ========================================
   GRID LAYOUTS
   ======================================== */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.animated {
    opacity: 1;
    transform: translateY(0);
}

.fade-in {
    opacity: 0;
    transition: opacity 0.6s ease;
}

.fade-in.animated {
    opacity: 1;
}

.slide-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-left.animated {
    opacity: 1;
    transform: translateX(0);
}

.slide-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-right.animated {
    opacity: 1;
    transform: translateX(0);
}

.scale-up {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-up.animated {
    opacity: 1;
    transform: scale(1);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 0 0 15px rgba(59, 130, 246, 0); }
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes count-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse-glow { animation: pulse-glow 2s ease-in-out infinite; }
.animate-gradient { 
    background-size: 200% 200%;
    animation: gradient-shift 4s ease infinite; 
}
.animate-spin-slow { animation: spin-slow 20s linear infinite; }

/* ========================================
   BACKGROUNDS & DECORATIONS
   ======================================== */
.bg-dark {
    background: var(--nxt-dark);
    color: var(--nxt-white);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 {
    color: var(--nxt-white);
}

.bg-dark p {
    color: var(--nxt-gray-400);
}

.bg-light {
    background: var(--nxt-light);
}

.bg-gradient-blue {
    background: linear-gradient(135deg, var(--nxt-blue-600), var(--nxt-blue-800));
}

.bg-gradient-mixed {
    background: linear-gradient(135deg, var(--nxt-blue-700), var(--nxt-dark), var(--nxt-red-900));
}

.bg-mesh {
    background-color: var(--nxt-dark);
    background-image: 
        radial-gradient(at 40% 20%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(239, 68, 68, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
        radial-gradient(at 80% 50%, rgba(239, 68, 68, 0.08) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(59, 130, 246, 0.1) 0px, transparent 50%);
}

.bg-grid {
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.bg-dots {
    background-image: radial-gradient(circle, var(--nxt-light-3) 1px, transparent 1px);
    background-size: 24px 24px;
}

.decoration-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    pointer-events: none;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--nxt-dark);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--nxt-dark);
    background: var(--nxt-white);
    border: 2px solid var(--nxt-light-3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--nxt-blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   RESPONSIVE (bp-lg: 1024, bp-md: 768, bp-sm: 480)
   ======================================== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-3xl); }
    .section { padding: var(--space-16) 0; }
    .section-title { font-size: var(--text-3xl); }
}

@media (max-width: 768px) {
    .container { padding: 0 var(--space-4); }
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-2xl); }
    .section { padding: var(--space-12) 0; }
    .section-title { font-size: var(--text-2xl); }
    .section-subtitle { font-size: var(--text-base); }
    .btn-lg {
        padding: var(--space-3) var(--space-6);
        font-size: var(--text-sm);
        min-height: 44px;
    }
    .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    .container { padding: 0 var(--space-3); }
    h1 { font-size: var(--text-3xl); }
    .section { padding: var(--space-10) 0; }
}