/**
 * Smartelematics - Main Stylesheet
 * Purple/Violet theme for GPS tracking
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Purple theme */
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-primary-light: #a78bfa;
    --color-secondary: #312e81;
    --color-accent: #8b5cf6;

    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
    --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

@media (min-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-4xl); }
    h3 { font-size: var(--text-2xl); }
}

/* ===== Utilities ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-24) 0;
    }
}

.section--alt {
    background-color: var(--color-gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-title {
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hidden {
    display: none !important;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
}

.btn--primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-color: transparent;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-white);
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn--white {
    background: var(--color-white);
    color: var(--color-primary);
}

.btn--white:hover {
    background: var(--color-gray-100);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn--outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn--outline-white:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

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

.btn--large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-base);
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-white);
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-top {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-2) 0;
    font-size: var(--text-sm);
}

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

.header-top__left {
    display: flex;
    gap: var(--spacing-6);
}

.header-top__left a {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-white);
    opacity: 0.9;
}

.header-top__left a:hover {
    opacity: 1;
    color: var(--color-white);
}

.header-top__right a {
    color: var(--color-white);
    opacity: 0.9;
}

.header-top__right a:hover {
    opacity: 1;
    color: var(--color-white);
}

.header-main {
    padding: var(--spacing-4) 0;
}

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

.site-logo img {
    height: 45px;
    width: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.main-nav__list {
    display: none;
    list-style: none;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .main-nav__list {
        display: flex;
    }
}

.main-nav__link {
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--spacing-2) 0;
    position: relative;
}

.main-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition);
}

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

.main-nav__link:hover::after,
.main-nav__link.active::after {
    width: 100%;
}

.main-nav .btn {
    display: none;
}

@media (min-width: 768px) {
    .main-nav .btn {
        display: inline-flex;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-gray-700);
    padding: var(--spacing-2);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--spacing-6) 0;
    box-shadow: var(--shadow-lg);
    display: none;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu__list {
    list-style: none;
    margin-bottom: var(--spacing-6);
}

.mobile-menu__list li {
    border-bottom: 1px solid var(--color-gray-100);
}

.mobile-menu__list a {
    display: block;
    padding: var(--spacing-4) 0;
    font-weight: 500;
    color: var(--color-gray-700);
}

.mobile-menu__list a:hover {
    color: var(--color-primary);
}

.mobile-menu__cta {
    padding-top: var(--spacing-4);
}

.mobile-menu__cta .btn {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero {
    padding: var(--spacing-12) 0 var(--spacing-16);
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-16) 0 var(--spacing-24);
    }

    .hero .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-12);
        align-items: center;
    }
}

.hero__content {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

@media (min-width: 768px) {
    .hero__content {
        text-align: left;
        margin-bottom: 0;
    }
}

.hero__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
    .hero__title {
        font-size: var(--text-5xl);
    }
}

@media (min-width: 1024px) {
    .hero__title {
        font-size: var(--text-6xl);
    }
}

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-8);
    max-width: 500px;
}

@media (min-width: 768px) {
    .hero__subtitle {
        font-size: var(--text-xl);
    }
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-10);
}

@media (min-width: 768px) {
    .hero__cta {
        justify-content: flex-start;
    }
}

.hero__stats {
    display: flex;
    gap: var(--spacing-8);
    justify-content: center;
}

@media (min-width: 768px) {
    .hero__stats {
        justify-content: flex-start;
    }
}

.hero__stat {
    text-align: center;
}

.hero__stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.hero__stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.hero__visual {
    display: flex;
    justify-content: center;
}

.hero__image-container {
    width: 100%;
    max-width: 500px;
}

.hero__illustration {
    width: 100%;
    height: auto;
}

/* ===== Features Section ===== */
.features__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background: var(--color-white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--color-gray-100);
}

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

.feature-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    color: var(--color-white);
}

.feature-card__title {
    margin-bottom: var(--spacing-3);
    font-size: var(--text-lg);
}

.feature-card__text {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    line-height: 1.7;
}

/* ===== Benefits Section ===== */
.benefits__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .benefits__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.benefits__card {
    background: var(--color-white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    text-align: center;
}

.benefits__icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(91, 33, 182, 0.1) 100%);
    border-radius: var(--radius-full);
    margin: 0 auto var(--spacing-6);
    color: var(--color-primary);
}

.benefits__title {
    margin-bottom: var(--spacing-3);
}

.benefits__text {
    color: var(--color-gray-600);
}

/* ===== Alerts Section ===== */
.alerts__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .alerts__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .alerts__grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.alert-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-6);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all var(--transition);
}

.alert-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.alert-item__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    color: var(--color-white);
}

.alert-item span {
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

/* ===== CTA Section ===== */
.cta {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.cta__content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta__title {
    color: var(--color-white);
    margin-bottom: var(--spacing-4);
}

.cta__text {
    font-size: var(--text-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-8);
}

.cta__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
}

/* ===== Page Hero ===== */
.page-hero {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: var(--spacing-16) 0;
    text-align: center;
}

.page-hero__title {
    color: var(--color-white);
    margin-bottom: var(--spacing-4);
}

.page-hero__subtitle {
    font-size: var(--text-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    gap: var(--spacing-12);
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1.5fr 1fr;
    }
}

.contact-card {
    background: var(--color-white);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.contact-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    margin: 0 auto var(--spacing-4);
    color: var(--color-white);
}

.contact-card h3 {
    margin-bottom: var(--spacing-2);
}

.contact-card p {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-2);
}

.contact-card a {
    font-weight: 600;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-row {
    display: grid;
    gap: var(--spacing-5);
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-2);
    color: var(--color-gray-700);
}

.required {
    color: var(--color-error);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    transition: all var(--transition);
    background: var(--color-white);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

input.error,
textarea.error {
    border-color: var(--color-error);
}

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

/* ===== Footer ===== */
.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-main {
    display: grid;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

@media (min-width: 768px) {
    .footer-main {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand__logo {
    margin-bottom: var(--spacing-4);
}

.footer-brand__logo img {
    height: 40px;
}

.footer-brand__text {
    font-size: var(--text-sm);
    max-width: 280px;
}

.footer-nav__title {
    color: var(--color-white);
    font-size: var(--text-base);
    margin-bottom: var(--spacing-4);
}

.footer-nav__list {
    list-style: none;
}

.footer-nav__list li {
    margin-bottom: var(--spacing-2);
}

.footer-nav__list a {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    transition: color var(--transition);
}

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

.footer-bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
    font-size: var(--text-sm);
}

.footer-bottom a {
    color: var(--color-primary-light);
}

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

/* ===== Responsive Adjustments ===== */
@media (max-width: 767px) {
    .header-top__left {
        flex-direction: column;
        gap: var(--spacing-1);
    }

    .header-top__left span {
        display: none;
    }

    .header-top__right {
        display: none;
    }
}