:root {
    --navy: #002D5B;
    --teal: #00A7B5;
    --sky: #3B82F6;
    --stone: #E8EEF3;
    --white: #ffffff;
    --dark: #111827;
    --text: #374151;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--text);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background-color: var(--navy);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-text {
    color: var(--white);
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: 2px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--stone);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--teal);
}

/* Common Layout */
main {
    min-height: calc(100vh - 140px);
}

section {
    padding: 5rem 10%;
}

h1, h2, h3 {
    color: var(--navy);
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--stone);
    text-align: center;
    padding: 2rem;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* Home Page */
.hero-home {
    background: linear-gradient(135deg, var(--navy) 0%, var(--teal) 100%);
    color: var(--white);
    text-align: center;
    padding: 8rem 10%;
}

.hero-home h1 {
    color: var(--white);
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-home p {
    font-size: 1.25rem;
    color: var(--stone);
    max-width: 800px;
    margin: 0 auto;
    font-weight: 300;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    background-color: var(--stone);
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
    border-top: 4px solid var(--sky);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

/* About Page (Story) */
.timeline {
    max-width: 800px;
    margin: 0 auto;
}
.timeline-item {
    display: flex;
    margin-bottom: 2rem;
    background: var(--stone);
    border-radius: 8px;
    overflow: hidden;
}
.timeline-number {
    background: var(--sky);
    color: var(--white);
    padding: 2rem;
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
}
.timeline-content {
    padding: 2rem;
}
.timeline-content h3 {
    margin-bottom: 0.5rem;
}

/* Trust Page */
.hero-trust {
    background-color: var(--navy);
    color: var(--white);
    text-align: center;
    padding: 4rem 10%;
}
.hero-trust h1 { color: var(--white); }

.acronym-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1rem;
    margin-top: 3rem;
}
.acronym-box {
    background: var(--stone);
    text-align: center;
    padding: 2rem 1rem;
    border-radius: 8px;
    transition: transform 0.3s;
}
.acronym-box:hover {
    transform: translateY(-5px);
    background: var(--white);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}
.acronym-letter {
    color: var(--sky);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}
.acronym-word {
    color: var(--navy);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Platform Page */
.platform-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}
.platform-module {
    border: 1px solid #e5e7eb;
    padding: 3rem;
    border-radius: 8px;
    position: relative;
}
.platform-module::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--teal), var(--sky));
}

/* Contact Page */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--stone);
    padding: 3rem;
    border-radius: 8px;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--navy);
    font-weight: 600;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit;
}
.btn-submit {
    background-color: var(--navy);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s;
}
.btn-submit:hover {
    background-color: var(--teal);
}