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

body {
    font-family: 'Inter', sans-serif;
    background: #0b0f1a;
    color: #e5e7eb;
    line-height: 1.6;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(16px, 4vw, 40px);
}

/* ====== NAVIGATION ====== */
nav {
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(10px);
    padding: clamp(14px, 2vw, 18px) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: clamp(1.3rem, 3.5vw, 1.6rem);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: #22d3ee;
}

/* ====== BUTTONS ====== */
.btn-outline {
    background: transparent;
    border: 1px solid #22d3ee;
    color: #22d3ee;
    padding: clamp(8px, 1.2vw, 10px) clamp(16px, 3vw, 24px);
    border-radius: 40px;
    font-weight: 600;
    font-size: clamp(0.8rem, 1.2vw, 0.95rem);
    transition: 0.35s ease;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-outline:hover {
    background: #22d3ee;
    color: #0b0f1a;
}

.btn-primary {
    background: #22d3ee;
    color: #0b0f1a;
    padding: clamp(10px, 1.5vw, 12px) clamp(20px, 3.5vw, 30px);
    border-radius: 40px;
    font-weight: 700;
    font-size: clamp(0.85rem, 1.2vw, 1rem);
    border: none;
    transition: 0.35s ease;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: #67e8f9;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(34, 211, 238, 0.3);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary .spinner {
    display: none;
    animation: spin 1s linear infinite;
}

.btn-primary.loading .spinner {
    display: inline-block;
}

.btn-primary.loading .btn-text {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ====== HERO ====== */
.hero {
    padding: clamp(100px, 18vw, 140px) 0 clamp(40px, 8vw, 80px);
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 6vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto clamp(12px, 2vw, 20px);
}

.hero h1 .highlight {
    background: linear-gradient(135deg, #22d3ee, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    color: #9ca3af;
    max-width: 700px;
    margin: 0 auto clamp(24px, 4vw, 40px);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(12px, 2vw, 16px);
}

/* ====== SERVICES ====== */
.services {
    padding: clamp(40px, 10vw, 80px) 0;
    background: rgba(255, 255, 255, 0.02);
}

.services h2 {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: clamp(30px, 6vw, 50px);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(200px, 25vw, 260px), 1fr));
    gap: clamp(16px, 3vw, 30px);
}

.service-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: clamp(20px, 3vw, 30px) clamp(16px, 2.5vw, 25px);
    transition: 0.35s ease;
}

.service-card:hover {
    border-color: #22d3ee;
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(34, 211, 238, 0.08);
}

.service-card .icon {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    color: #22d3ee;
    margin-bottom: clamp(10px, 1.5vw, 16px);
}

.service-card h3 {
    font-size: clamp(1.1rem, 1.6vw, 1.3rem);
    font-weight: 700;
    margin-bottom: clamp(6px, 1vw, 10px);
}

.service-card p {
    color: #9ca3af;
    font-size: clamp(0.85rem, 1.1vw, 0.95rem);
}

/* ====== TRUST SECTION ====== */
.trust {
    padding: clamp(30px, 6vw, 60px) 0;
}

.trust h2 {
    text-align: center;
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 700;
    margin-bottom: clamp(20px, 4vw, 30px);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(140px, 20vw, 200px), 1fr));
    gap: clamp(12px, 2vw, 20px);
    max-width: 800px;
    margin: 0 auto;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: clamp(8px, 1.2vw, 12px);
    font-size: clamp(0.85rem, 1.1vw, 1rem);
    color: #d1d5db;
}

.trust-item i {
    color: #22d3ee;
    font-size: clamp(1.1rem, 1.6vw, 1.4rem);
    flex-shrink: 0;
}

/* ====== DEMO FORM ====== */
.demo {
    padding: clamp(40px, 10vw, 80px) 0;
}

.demo-box {
    max-width: min(500px, 95%);
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: clamp(20px, 3vw, 30px);
    padding: clamp(24px, 5vw, 40px) clamp(16px, 4vw, 35px);
    text-align: center;
}

.demo-box h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    margin-bottom: clamp(6px, 1vw, 10px);
}

.demo-box .sub {
    color: #9ca3af;
    margin-bottom: clamp(16px, 3vw, 30px);
    font-size: clamp(0.9rem, 1.2vw, 1rem);
}

.demo-box input {
    width: 100%;
    padding: clamp(12px, 1.5vw, 14px) clamp(14px, 2vw, 18px);
    margin-bottom: clamp(12px, 1.5vw, 16px);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    color: #fff;
    font-size: clamp(0.9rem, 1.2vw, 1rem);
    outline: none;
    transition: 0.3s;
}

.demo-box input:focus {
    border-color: #22d3ee;
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.1);
}

.demo-box input::placeholder {
    color: #6b7280;
}

.demo-box .btn-primary {
    width: 100%;
    padding: clamp(12px, 1.5vw, 14px);
    font-size: clamp(0.95rem, 1.3vw, 1.1rem);
    margin-top: clamp(4px, 0.8vw, 8px);
    position: relative;
}

/* ====== MESSAGES ====== */
.success-message {
    display: none;
    padding: clamp(14px, 2vw, 20px);
    background: rgba(34, 197, 94, 0.15);
    border-radius: 16px;
    color: #4ade80;
    font-weight: 600;
    margin-top: clamp(14px, 2vw, 20px);
    line-height: 1.8;
    font-size: clamp(0.85rem, 1.1vw, 0.95rem);
}

.success-message.show {
    display: block;
}

.error-message {
    display: none;
    padding: clamp(10px, 1.5vw, 14px);
    background: rgba(239, 68, 68, 0.15);
    border-radius: 16px;
    color: #f87171;
    font-weight: 500;
    margin-top: clamp(10px, 1.5vw, 16px);
    font-size: clamp(0.85rem, 1.1vw, 0.95rem);
}

.error-message.show {
    display: block;
}

/* ====== FINAL CTA ====== */
.cta {
    padding: clamp(30px, 6vw, 60px) 0;
    background: rgba(34, 211, 238, 0.05);
    text-align: center;
}

.cta h2 {
    font-size: clamp(1.6rem, 4.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: clamp(6px, 1vw, 10px);
}

.cta p {
    color: #9ca3af;
    font-size: clamp(0.95rem, 1.4vw, 1.2rem);
    margin-bottom: clamp(16px, 3vw, 30px);
}

/* ====== FOOTER ====== */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: clamp(20px, 3vw, 30px) 0;
    text-align: center;
    color: #6b7280;
    font-size: clamp(0.75rem, 1vw, 0.9rem);
}