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

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

:root {
    --otp-primary: #2563eb;
    --otp-primary-dark: #1d4ed8;
    --otp-primary-light: #dbeafe;
    --otp-accent: #0891b2;
    --otp-accent-light: #cffafe;
    --otp-dark: #0f172a;
    --otp-text: #334155;
    --otp-text-light: #64748b;
    --otp-bg: #f8fafc;
    --otp-white: #ffffff;
    --otp-border: #e2e8f0;
    --otp-success: #059669;
    --otp-error: #dc2626;
    --otp-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
    --otp-shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 17px;
    line-height: 1.7;
    color: var(--otp-text);
    background: var(--otp-bg);
}

h1, h2, h3, h4 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--otp-dark);
    line-height: 1.2;
}

h1 {
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 800;
}

h2 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
}

h3 {
    font-size: clamp(20px, 2.5vw, 24px);
    font-weight: 600;
}

a {
    color: var(--otp-primary);
    text-decoration: none;
    transition: color 0.25s ease;
}

a:hover {
    color: var(--otp-primary-dark);
}

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

.otp-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--otp-border);
}

.otp-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.otp-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--otp-primary);
}

.otp-logo i {
    font-size: 1.75rem;
}

.otp-nav-links {
    display: none;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.otp-nav-links a {
    color: var(--otp-text);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.otp-nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--otp-primary);
    transition: width 0.3s ease;
}

.otp-nav-links a:hover::after {
    width: 100%;
}

.otp-nav-cta {
    background: var(--otp-primary);
    color: var(--otp-white) !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 8px;
    font-weight: 600;
}

.otp-nav-cta::after {
    display: none !important;
}

.otp-nav-cta:hover {
    background: var(--otp-primary-dark);
    color: var(--otp-white) !important;
}

.otp-menu-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--otp-dark);
    cursor: pointer;
    padding: 0.5rem;
}

.otp-hero {
    min-height: 100vh;
    padding: 8rem 1.5rem 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    background: linear-gradient(135deg, var(--otp-white) 0%, var(--otp-primary-light) 50%, var(--otp-accent-light) 100%);
    position: relative;
    overflow: hidden;
}

.otp-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.otp-hero-content {
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.otp-hero-badge {
    display: inline-block;
    background: var(--otp-primary);
    color: var(--otp-white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.otp-hero-content h1 {
    margin-bottom: 1.5rem;
}

.otp-hero-content p {
    font-size: 1.125rem;
    color: var(--otp-text-light);
    margin-bottom: 2rem;
    max-width: 500px;
}

.otp-hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--otp-primary);
    color: var(--otp-white);
    padding: 1rem 2rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.0625rem;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
}

.otp-hero-btn:hover {
    background: var(--otp-primary-dark);
    color: var(--otp-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.otp-hero-visual {
    position: relative;
    z-index: 1;
}

.otp-hero-visual img {
    border-radius: 16px;
    box-shadow: var(--otp-shadow-lg);
}

.otp-modules {
    padding: 5rem 1.5rem;
    background: var(--otp-white);
}

.otp-modules h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.otp-modules-intro {
    text-align: center;
    color: var(--otp-text-light);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.otp-modules-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto 3rem;
}

.otp-module {
    background: var(--otp-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--otp-border);
    transition: all 0.3s ease;
}

.otp-module:hover {
    transform: translateY(-4px);
    box-shadow: var(--otp-shadow);
    border-color: var(--otp-primary-light);
}

.otp-module-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.otp-module--odmori .otp-module-icon {
    background: #fef3c7;
    color: #d97706;
}

.otp-module--smjene .otp-module-icon {
    background: var(--otp-primary-light);
    color: var(--otp-primary);
}

.otp-module--zahtjevi .otp-module-icon {
    background: #d1fae5;
    color: var(--otp-success);
}

.otp-module--evidencija .otp-module-icon {
    background: var(--otp-accent-light);
    color: var(--otp-accent);
}

.otp-module h3 {
    margin-bottom: 0.75rem;
}

.otp-module p {
    color: var(--otp-text-light);
    font-size: 0.9375rem;
}

.otp-modules-image {
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: var(--otp-shadow);
}

.otp-cloud {
    padding: 5rem 1.5rem;
    background: var(--otp-dark);
    color: var(--otp-white);
}

.otp-cloud-text {
    max-width: 600px;
    margin-bottom: 3rem;
}

.otp-cloud h2 {
    color: var(--otp-white);
    margin-bottom: 1.25rem;
}

.otp-cloud-text > p {
    color: #94a3b8;
    margin-bottom: 2rem;
}

.otp-cloud-benefits {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.otp-cloud-benefits li {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #e2e8f0;
}

.otp-cloud-benefits i {
    color: var(--otp-accent);
    font-size: 1.25rem;
    width: 24px;
}

.otp-cloud-visual img {
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.otp-process {
    padding: 5rem 1.5rem;
    background: var(--otp-bg);
}

.otp-process h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.otp-process-timeline {
    max-width: 800px;
    margin: 0 auto 3rem;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.otp-process-step {
    background: var(--otp-white);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--otp-border);
    position: relative;
}

.otp-step-number {
    position: absolute;
    top: -16px;
    left: 2rem;
    width: 32px;
    height: 32px;
    background: var(--otp-primary);
    color: var(--otp-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.otp-process-step h3 {
    margin-bottom: 0.5rem;
}

.otp-process-step p {
    color: var(--otp-text-light);
    font-size: 0.9375rem;
}

.otp-process-connector {
    width: 2px;
    height: 32px;
    background: var(--otp-primary-light);
    margin-left: 3rem;
}

.otp-process-image {
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: var(--otp-shadow);
}

.otp-demo-request {
    padding: 5rem 1.5rem;
    background: linear-gradient(135deg, var(--otp-primary-light) 0%, var(--otp-white) 100%);
}

.otp-demo-content {
    max-width: 500px;
    margin-bottom: 3rem;
}

.otp-demo-content h2 {
    margin-bottom: 1rem;
}

.otp-demo-content > p {
    color: var(--otp-text-light);
    margin-bottom: 2rem;
}

.otp-demo-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.otp-form-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.otp-form-row label {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--otp-dark);
}

.otp-form-row input,
.otp-form-row select {
    padding: 0.875rem 1rem;
    border: 2px solid var(--otp-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.25s ease;
    background: var(--otp-white);
}

.otp-form-row input:focus,
.otp-form-row select:focus {
    outline: none;
    border-color: var(--otp-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.otp-form-row input:valid:not(:placeholder-shown) {
    border-color: var(--otp-success);
}

.otp-form-row input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: var(--otp-error);
}

.otp-form-consent {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.otp-form-consent input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--otp-primary);
    cursor: pointer;
}

.otp-form-consent label {
    font-size: 0.9375rem;
    color: var(--otp-text-light);
}

.otp-link-btn {
    background: none;
    border: none;
    color: var(--otp-primary);
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
}

.otp-link-btn:hover {
    color: var(--otp-primary-dark);
}

.otp-submit-btn {
    background: var(--otp-primary);
    color: var(--otp-white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.otp-submit-btn:hover {
    background: var(--otp-primary-dark);
    transform: translateY(-2px);
}

.otp-submit-btn:active {
    transform: translateY(0);
}

.otp-demo-visual img {
    border-radius: 12px;
    box-shadow: var(--otp-shadow-lg);
}

.otp-footer {
    background: var(--otp-dark);
    color: #94a3b8;
    padding: 3rem 1.5rem 1.5rem;
}

.otp-footer-main {
    display: grid;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 2rem;
}

.otp-footer-brand .otp-logo {
    color: var(--otp-white);
    margin-bottom: 1rem;
}

.otp-footer-brand p {
    font-size: 0.9375rem;
}

.otp-footer-contact h4,
.otp-footer-links h4 {
    color: var(--otp-white);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.otp-footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.otp-footer-contact a {
    color: #94a3b8;
}

.otp-footer-contact a:hover {
    color: var(--otp-white);
}

.otp-footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.otp-footer-link-btn {
    background: none;
    border: none;
    color: #94a3b8;
    font: inherit;
    font-size: 0.9375rem;
    cursor: pointer;
    text-align: left;
    padding: 0;
    transition: color 0.25s ease;
}

.otp-footer-link-btn:hover {
    color: var(--otp-white);
}

.otp-footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
}

.otp-cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--otp-white);
    padding: 1.25rem 1.5rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.otp-cookie-banner.visible {
    transform: translateY(0);
}

.otp-cookie-banner p {
    font-size: 0.9375rem;
    color: var(--otp-text);
}

.otp-cookie-actions {
    display: flex;
    gap: 0.75rem;
}

.otp-cookie-accept,
.otp-cookie-decline {
    padding: 0.625rem 1.25rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.25s ease;
    border: none;
}

.otp-cookie-accept {
    background: var(--otp-primary);
    color: var(--otp-white);
}

.otp-cookie-accept:hover {
    background: var(--otp-primary-dark);
}

.otp-cookie-decline {
    background: transparent;
    border: 2px solid var(--otp-border);
    color: var(--otp-text);
}

.otp-cookie-decline:hover {
    border-color: var(--otp-text-light);
}

.otp-modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.otp-modal.active {
    opacity: 1;
    visibility: visible;
}

.otp-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    cursor: pointer;
}

.otp-modal-content {
    position: relative;
    background: var(--otp-white);
    padding: 2rem;
    border-radius: 16px;
    max-width: 560px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.otp-modal.active .otp-modal-content {
    transform: translateY(0);
}

.otp-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--otp-text-light);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.25s ease;
}

.otp-modal-close:hover {
    color: var(--otp-dark);
}

.otp-modal-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    padding-right: 2rem;
}

.otp-modal-content p {
    color: var(--otp-text);
    line-height: 1.8;
}

.animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.animate-fade.visible {
    opacity: 1;
}

@media (min-width: 768px) {
    .otp-nav-links {
        display: flex;
    }

    .otp-menu-toggle {
        display: none;
    }

    .otp-hero {
        flex-direction: row;
        align-items: center;
        padding: 6rem 3rem;
    }

    .otp-hero-content {
        flex: 1;
    }

    .otp-hero-visual {
        flex: 1;
    }

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

    .otp-cloud {
        display: flex;
        align-items: center;
        gap: 4rem;
        padding: 6rem 3rem;
    }

    .otp-cloud-text {
        flex: 1;
        margin-bottom: 0;
    }

    .otp-cloud-visual {
        flex: 1;
    }

    .otp-demo-request {
        display: flex;
        align-items: center;
        gap: 4rem;
        padding: 6rem 3rem;
    }

    .otp-demo-content {
        flex: 1;
        margin-bottom: 0;
    }

    .otp-demo-visual {
        flex: 1;
    }

    .otp-footer-main {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .otp-cookie-banner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .otp-nav {
        padding: 1rem 3rem;
    }

    .otp-hero {
        padding: 0 5rem;
        gap: 5rem;
    }

    .otp-hero-visual img {
        max-width: 550px;
    }

    .otp-modules {
        padding: 6rem 3rem;
    }

    .otp-modules-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
    }

    .otp-module {
        padding: 1.75rem;
    }

    .otp-process {
        padding: 6rem 3rem;
    }

    .otp-process-timeline {
        flex-direction: row;
        align-items: flex-start;
    }

    .otp-process-step {
        flex: 1;
    }

    .otp-process-connector {
        width: 40px;
        height: 2px;
        margin: 3rem 0 0 0;
        align-self: flex-start;
    }

    .otp-footer {
        padding: 4rem 3rem 2rem;
    }
}

@media (max-width: 767px) {
    .otp-nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--otp-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--otp-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .otp-nav-links.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .otp-nav-cta {
        text-align: center;
        width: 100%;
    }
}