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

:root {
    --primary: #1a5276;
    --primary-dark: #0e3a56;
    --primary-light: #2980b9;
    --accent: #e67e22;
    --accent-hover: #d35400;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --bg: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
    --border: #e0e6ed;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary);
}

.logo__icon {
    font-size: 28px;
    color: var(--accent);
}

.logo__text {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav__link {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    transition: color var(--transition);
}

.nav__link:hover {
    color: var(--primary-light);
}

.nav__link--active {
    color: var(--primary);
}

.nav__link--login {
    background: var(--primary);
    color: #fff;
    padding: 8px 20px;
    border-radius: var(--radius);
    transition: background var(--transition);
}

.nav__link--login:hover {
    background: var(--primary-dark);
    color: #fff;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: #fff;
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero__title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero__subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 36px;
    line-height: 1.5;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
}

.btn--primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn--outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn--full {
    width: 100%;
}

.btn--loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn--success {
    background: #27ae60;
    border-color: #27ae60;
}

/* Stats */
.stats {
    background: var(--bg-light);
    padding: 50px 0;
    border-bottom: 1px solid var(--border);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat__number {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat__label {
    font-size: 15px;
    color: var(--text-light);
    font-weight: 500;
}

/* Services */
.services {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text);
    letter-spacing: -0.5px;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.service-card__icon {
    font-size: 40px;
    color: var(--accent);
    margin-bottom: 16px;
}

.service-card__title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
}

.service-card__desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
}

/* About */
.about {
    background: var(--bg-light);
    padding: 80px 0;
}

.about__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__text {
    font-size: 17px;
    color: var(--text);
    margin-bottom: 20px;
    line-height: 1.7;
}

.about__features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 36px;
    text-align: left;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: 500;
}

.feature__icon {
    color: var(--accent);
    font-size: 18px;
    flex-shrink: 0;
}

/* Contact */
.contact {
    padding: 80px 0;
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-item {
    margin-bottom: 24px;
}

.contact-item__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.contact-item__value {
    font-size: 17px;
    color: var(--text);
    font-weight: 500;
}

/* Form */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    transition: border-color var(--transition);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
}

.form-input::placeholder {
    color: var(--text-light);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group--checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.form-checkbox-label {
    font-size: 14px;
    color: var(--text);
    cursor: pointer;
}

.form-input--error {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-error {
    display: block;
    font-size: 13px;
    color: #e74c3c;
    margin-top: 6px;
    min-height: 18px;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 60px 0 30px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer__col {
    display: flex;
    flex-direction: column;
}

.logo--footer .logo__text {
    color: #fff;
}

.footer__copy {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-top: 12px;
}

.footer__heading {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.footer__link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    padding: 4px 0;
    transition: color var(--transition);
}

.footer__link:hover {
    color: #fff;
}

.footer--minimal {
    padding: 24px 0;
    text-align: center;
}

/* Login Page */
.login-page {
    background: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.login-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login__title {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--text);
}

.login__subtitle {
    font-size: 15px;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 32px;
}

.login__form {
    margin-bottom: 24px;
}

.login__footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.login__link {
    color: var(--primary-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.login__link:hover {
    text-decoration: underline;
}

.login__help {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 12px;
}

.login__help a {
    color: var(--primary-light);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 992px) {
    .hero__title {
        font-size: 36px;
    }

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

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

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

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .nav--open {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 60px 0 50px;
    }

    .hero__title {
        font-size: 30px;
    }

    .hero__subtitle {
        font-size: 17px;
    }

    .hero__actions {
        flex-direction: column;
    }

    .section-title {
        font-size: 28px;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .about__features {
        grid-template-columns: 1fr;
    }

    .contact__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .login-card {
        padding: 28px;
    }
}

@media (max-width: 480px) {
    .stats__grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stat__number {
        font-size: 32px;
    }
}