/* =============================================
   CITIZORA DESIGN SYSTEM
   Global Variables, Typography & Utilities
   ============================================= */

:root {
    /* ===== COLORS ===== */
    --color-primary: #6BBAFF;
    --color-primary-hover: #3990DB;
    --color-primary-active: #00229E;
    
    --color-bg: #FFFFFF;
    --color-bg-alt: #F5FAFF;
    --color-bg-secondary: #F6F7FF;
    
    --color-text: #1F1F1F;
    --color-text-secondary: #6E6E6E;
    --color-border: #6E6E6E;
    --color-white: #FFFFFF;
    
    /* ===== GRADIENTS ===== */
    --gradient-primary: linear-gradient(180deg, rgba(177, 218, 255, 1), rgba(107, 186, 255, 1) 50%, rgba(35, 74, 212, 1) 100%);
    --gradient-logo: linear-gradient(135deg, var(--color-primary-active) 0%, var(--color-primary) 100%);
    --gradient-hero: linear-gradient(135deg, #1a3a5c 0%, #0d1b2a 50%, #0a1628 100%);
    --gradient-contact: linear-gradient(158deg, #E8F4FF 14.47%, #9CD1FF 35%, #4585FB 66.11%, #00229E 85.53%);
    
    /* ===== TYPOGRAPHY - Desktop ===== */
    --font-family: 'Onest', sans-serif;
    
    --h1-size: 74px;
    --h1-line: 100%;
    --h1-weight: 700;
    
    --h2-size: 54px;
    --h2-line: 110%;
    --h2-weight: 600;
    
    --h3-size: 32px;
    --h3-line: 110%;
    --h3-weight: 600;
    
    --h4-size: 22px;
    --h4-line: 130%;
    --h4-weight: 600;
    
    --body1-size: 20px;
    --body1-line: 140%;
    
    --body2-size: 18px;
    --body2-line: 150%;
    
    --body3-size: 16px;
    --body3-line: 140%;
    
    --body4-size: 14px;
    --body4-line: 140%;
    
    --btn-size: 14px;
    --btn-line: 100%;
    --btn-weight: 600;
    
    /* ===== SPACING ===== */
    --section-padding: 60px;
    --container-max: 1466px;
    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 14px;
    --gap-lg: 24px;
    --gap-xl: 48px;
    
    /* ===== BORDER RADIUS ===== */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 50px;
    --radius-full: 57px;
    
    /* ===== TRANSITIONS ===== */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== MOBILE TYPOGRAPHY (≤992px) ===== */
@media (max-width: 992px) {
    :root {
        --h1-size: 32px;
        --h2-size: 28px;
        --h3-size: 22px;
        --h4-size: 20px;
        --h4-weight: 700;
        
        --body1-size: 18px;
        --body2-size: 16px;
        --body2-line: 140%;
        --body3-size: 14px;
        --body3-line: 130%;
        --body4-size: 12px;
        
        --btn-size: 12px;
        
        --section-padding: 40px;
        --gap-lg: 14px;
    }
}

/* =============================================
   BASE STYLES
   ============================================= */

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

body {
    font-family: var(--font-family);
    background: var(--color-bg-alt);
    color: var(--color-text);
    font-size: var(--body3-size);
    line-height: var(--body3-line);
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 992px) {
    .container {
        padding: 0 var(--gap-md);
    }
}

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

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

/* =============================================
   TYPOGRAPHY CLASSES
   ============================================= */

.h1, h1 {
    font-size: var(--h1-size);
    line-height: var(--h1-line);
    font-weight: var(--h1-weight);
    letter-spacing: 0;
}

.h2, h2 {
    font-size: var(--h2-size);
    line-height: var(--h2-line);
    font-weight: var(--h2-weight);
    letter-spacing: 0;
}

.h3, h3 {
    font-size: var(--h3-size);
    line-height: var(--h3-line);
    font-weight: var(--h3-weight);
    letter-spacing: 0;
}

.h4, h4 {
    font-size: var(--h4-size);
    line-height: var(--h4-line);
    font-weight: var(--h4-weight);
    letter-spacing: 0;
}

.body1 { font-size: var(--body1-size); line-height: var(--body1-line); }
.body1-semibold { font-size: var(--body1-size); line-height: var(--body1-line); font-weight: 600; }
.body2 { font-size: var(--body2-size); line-height: var(--body2-line); }
.body2-semibold { font-size: var(--body2-size); line-height: var(--body2-line); font-weight: 600; }
.body3 { font-size: var(--body3-size); line-height: var(--body3-line); }
.body3-semibold { font-size: var(--body3-size); line-height: var(--body3-line); font-weight: 600; }
.body4 { font-size: var(--body4-size); line-height: var(--body4-line); }

/* =============================================
   UTILITY CLASSES
   ============================================= */

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-dark { color: var(--color-text); }
.text-white { color: var(--color-white); }
.text-active { color: var(--color-primary-active); }

.bg-primary { background-color: var(--color-bg); }
.bg-alt { background-color: var(--color-bg-alt); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-accent { background-color: var(--color-primary); }
.bg-dark { background-color: var(--color-primary-active); }

.font-regular { font-weight: 400; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

/* =============================================
   BUTTONS
   ============================================= */

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 22px 70px;
    background: var(--color-primary);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: var(--btn-size);
    font-weight: var(--btn-weight);
    line-height: var(--btn-line);
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn:active {
    background: var(--color-primary-active);
    color: var(--color-white);
    transform: translateY(0);
}

.btn-outline {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-primary);
}

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

.btn-small {
    padding: 22px 15px;
}

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

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

/* =============================================
   FORM ELEMENTS
   ============================================= */

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

.form-group label {
    font-size: var(--body3-size);
    line-height: var(--body3-line);
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    height: 60px;
    padding: 19px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(68, 68, 68, 0.20);
    background: var(--color-bg);
    font-family: var(--font-family);
    font-size: var(--body3-size);
    line-height: var(--body3-line);
    color: var(--color-text);
    transition: border-color var(--transition-normal);
    width: 100%;
}

.form-group textarea {
    height: auto;
    min-height: 120px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #9B9B9B;
}

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

@media (max-width: 992px) {
    .form-group input,
    .form-group select {
        height: 56px;
        padding: 19px var(--gap-md);
    }
}

/* =============================================
   SECTION COMPONENTS
   ============================================= */

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 23px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    margin-bottom: var(--gap-sm);
}

.section-tag-white {
    background: var(--color-bg);
}

.section-tag-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary-active);
    border-radius: 50%;
}

.section-tag span {
    font-size: var(--body3-size);
    font-weight: 600;
    color: var(--color-text);
}

.section-header {
    text-align: center;
    max-width: 970px;
    margin: 0 auto 40px;
}

.section-header h2 {
    font-size: var(--h2-size);
    font-weight: var(--h2-weight);
    line-height: var(--h2-line);
    color: var(--color-text);
    margin-bottom: var(--gap-sm);
}

.section-header p {
    font-size: var(--body2-size);
    line-height: var(--body2-line);
    color: var(--color-text-secondary);
}

@media (max-width: 992px) {
    .section-tag {
        padding: 4px 20px;
    }
    
    .section-header {
        margin-bottom: var(--gap-lg);
    }
}

/* =============================================
   ANIMATIONS
   ============================================= */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fade-in { animation: fadeIn 0.6s ease forwards; }
.animate-fade-in-up { animation: fadeInUp 0.6s ease forwards; }
.animate-slide-left { animation: slideInLeft 0.6s ease forwards; }
.animate-slide-right { animation: slideInRight 0.6s ease forwards; }

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

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

/* =============================================
   VISUALLY HIDDEN (Accessibility)
   ============================================= */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.lg-flex {
    display: flex;
}
.m-flex {
    display: none;
}
.lg-block {
    display: block;
}
.m-block {
    display: none;
}

@media (max-width: 992px) {
    .lg-flex {
        display: none;
    }
    .m-flex {
        display: flex;
    }
    .lg-block {
        display: none;
    }
    .m-block {
        display: block;
    }
}