/* ===================================
   Stora Landing Page - Main Stylesheet
   =================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --color-primary: #022859;      /* Stora Blue */
    --color-secondary: #F49B39;    /* Orange */
    --color-background: #E5E9EE;   /* Light Gray */
    --color-white: #FFFFFF;
    --color-gray: #828282;
    --color-border: #DEE5ED;
    
    /* Typography */
    --font-heading: 'Quicksand', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-button: 'DM Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 120px;
    
    /* Border Radius */
    --radius-sm: 24px;
    --radius-md: 32px;
    --radius-lg: 48px;
    --radius-xl: 80px;
    --radius-full: 50px;
    
    /* Shadows */
    --shadow-card: 0px 4px 4.8px 0px rgba(0, 0, 0, 0.25);
    --shadow-hero: 8px 12px 12px 0px rgba(2, 40, 89, 0.2);
    
    /* Container */
    --container-width: 1216px;
    --container-padding: 112px;
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 20px;
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 70px;
    letter-spacing: 0.5px;
}

h2 {
    font-size: 48px;
    letter-spacing: 0.5px;
}

h3 {
    font-size: 32px;
    letter-spacing: 0.5px;
}

p {
    font-size: 21px;
    line-height: 1.52;
    letter-spacing: 0.5px;
}

/* ===================================
   Layout
   =================================== */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

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

.section-subtitle {
    text-align: center;
    font-size: 21px;
    margin-bottom: var(--spacing-xl);
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-lg);
}

.section-light {
    background-color: var(--color-background);
}

/* ===================================
   Buttons
   =================================== */

.btn {
    font-family: var(--font-button);
    font-weight: 700;
    font-size: 16px;
    padding: 12px 32px;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
    transition: all 0.3s ease;
    text-align: center;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background-color: #033A7A;
    border-color: #033A7A;
}

.btn-white {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
    font-size: 24px;
}

.btn-white:hover {
    background-color: #f5f5f5;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
    font-size: 24px;
}

.btn-secondary:hover {
    background-color: rgba(244, 155, 57, 0.1);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
    font-size: 24px;
}

.btn-outline:hover {
    background-color: rgba(244, 155, 57, 0.1);
}

.btn-orange {
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-color: var(--color-secondary);
    font-size: 36px;
    padding: 12px 40px;
}

.btn-orange:hover {
    background-color: #E58A28;
}

/* ===================================
   Header
   =================================== */

.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 17px 0;
}

.logo img {
    display: block;
}

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

.nav-link {
    font-family: var(--font-button);
    font-weight: 700;
    font-size: 16px;
    color: var(--color-primary);
    letter-spacing: 0.5px;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    opacity: 0.7;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    box-shadow: var(--shadow-hero);
}

.hero-content {
    display: flex;
    gap: var(--spacing-2xl);
    align-items: center;
    justify-content: space-between;
}

.hero-text {
    flex: 1;
    max-width: 633px;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    margin-bottom: var(--spacing-lg);
    font-size: 20px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
}

.hero-image {
    flex-shrink: 0;
    width: 428px;
}

/* ===================================
   Problem Section
   =================================== */

.problem {
    background-color: var(--color-background);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.problem-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 160px;
}

.problem-card p {
    font-size: 20px;
    line-height: 1.6;
}

.problem-highlight {
    text-align: center;
    font-weight: 800;
    font-size: 24px;
}

/* ===================================
   Solution Section
   =================================== */

.solution {
    margin: var(--spacing-2xl) 0;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.solution-item {
    display: flex;
    padding: var(--spacing-md);
}

.solution-item-left {
    justify-content: flex-start;
}

.solution-item-left .solution-content {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0) 9.615%, rgba(255, 255, 255, 0.9) 30%);
    padding: var(--spacing-md) 100px var(--spacing-md) 300px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.solution-item-right {
    justify-content: flex-end;
}

.solution-item-right .solution-content {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.9) 70%, rgba(255, 255, 255, 0) 90%);
    padding: var(--spacing-md) 300px var(--spacing-md) 100px;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.solution-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.solution-icon {
    width: 100px;
    height: 90px;
    flex-shrink: 0;
}

.solution-content h3 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 28px;
    color: var(--color-primary);
    line-height: 1.14;
    text-align: center;
}

/* ===================================
   About Section
   =================================== */

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

.about-illustration {
    margin: var(--spacing-xl) 0;
    display: flex;
    justify-content: center;
}

.about-illustration img {
    max-width: 1096px;
}

.about-text {
    text-align: center;
    max-width: 1216px;
    margin: 0 auto;
}

/* ===================================
   How It Works Section
   =================================== */

.how-it-works {
    background-color: var(--color-white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.step-card {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 184px;
}

.step-number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    font-size: 20px;
    line-height: 1.6;
}

/* ===================================
   Pricing Section
   =================================== */

.pricing {
    padding: var(--spacing-3xl) 0;
}

.pricing-divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-xl) auto;
    max-width: var(--container-width);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    max-width: 1203px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background-color: var(--color-white);
    padding: 56px var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.pricing-header h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.pricing-description {
    font-size: 18px;
    text-align: center;
    line-height: 1.4;
}

.pricing-price {
    font-weight: 800;
    font-size: 30px;
    text-align: center;
    margin: auto 0;
}

.pricing-card .btn {
    width: 100%;
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    margin-top: var(--spacing-2xl);
}

.contact-form {
    max-width: 1216px;
    margin: 0 auto;
    padding: 50px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 56px;
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    font-size: 24px;
    color: var(--color-white);
    font-weight: 400;
}

.form-group input,
.form-group textarea {
    font-family: var(--font-body);
    font-size: 21px;
    padding: 16px 32px;
    border: 1px solid var(--color-white);
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-white);
    transition: border-color 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 300;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form-group textarea {
    resize: vertical;
    min-height: 300px;
}

.form-submit {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.form-message {
    margin-top: var(--spacing-md);
    text-align: center;
    font-size: 18px;
    padding: var(--spacing-sm);
    border-radius: var(--spacing-xs);
    display: none;
}

.form-message.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border: 1px solid #4CAF50;
    display: block;
}

.form-message.error {
    background-color: rgba(244, 67, 54, 0.2);
    color: #F44336;
    border: 1px solid #F44336;
    display: block;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background-color: var(--color-gray);
    color: var(--color-white);
    padding: 50px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: center;
}

.footer-content p {
    font-family: var(--font-heading);
    font-size: 24px;
}

.footer a {
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 0.7;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --container-padding: 48px;
        --spacing-3xl: 80px;
    }
    
    h1 {
        font-size: 52px;
    }
    
    h2 {
        font-size: 40px;
    }
    
    .hero-content {
        flex-direction: column;
    }
    
    .hero-image {
        width: 100%;
        max-width: 400px;
    }
    
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .solution-item-left .solution-content {
        padding: var(--spacing-md) 50px var(--spacing-md) 150px;
    }
    
    .solution-item-right .solution-content {
        padding: var(--spacing-md) 150px var(--spacing-md) 50px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 24px;
        --spacing-3xl: 60px;
    }
    
    h1 {
        font-size: 40px;
    }
    
    h2 {
        font-size: 32px;
    }
    
    h3 {
        font-size: 24px;
    }
    
    p, .hero-subtitle, .section-subtitle {
        font-size: 18px;
    }
    
    .btn {
        font-size: 14px;
        padding: 10px 24px;
    }
    
    .btn-white,
    .btn-secondary,
    .btn-outline {
        font-size: 18px;
    }
    
    .btn-orange {
        font-size: 24px;
        padding: 10px 32px;
    }
    
    .nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-item-left .solution-content,
    .solution-item-right .solution-content {
        flex-direction: column;
        padding: var(--spacing-md);
        background: rgba(255, 255, 255, 0.9);
        border-radius: var(--radius-sm);
    }
    
    .solution-content h3 {
        font-size: 20px;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .form-group label {
        font-size: 18px;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        padding: 12px 24px;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
    text-align: center;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }