/* ===========================================
   THERMOKIL LTD - BASE STYLES
   Typography, Utilities, Animations
   =========================================== */

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-light);
    background-color: var(--deep-black);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100%;
}

html {
    overflow-x: hidden;
    max-width: 100%;
}

/* Prevent scroll when modal is open */
body.no-scroll {
    overflow: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

h5 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
}

h6 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-grey);
}

.lead {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-light);
    color: var(--text-grey);
    line-height: 1.7;
}

.text-muted {
    color: var(--text-muted);
}

.text-white {
    color: var(--text-white);
}

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

.text-grey {
    color: var(--text-grey);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-white);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-grey);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Fire accent underline for headings */
.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-fire);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--border-radius-full);
}

/* ===== LINKS ===== */
a {
    color: var(--fire-red);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--heat-orange);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 35px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--border-radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.3);
}

/* Fire Gradient Button (Primary CTA) */
.btn-fire {
    background: var(--gradient-fire);
    color: var(--text-white);
    border: none;
    box-shadow: var(--shadow-fire-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-fire::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-fire:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-fire-lg);
}

.btn-fire:hover::before {
    opacity: 1;
}

.btn-fire:active {
    transform: translateY(-1px);
}

/* Fire Outline Button */
.btn-outline-fire {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--border-fire);
}

.btn-outline-fire:hover {
    background: rgba(255, 59, 48, 0.1);
    border-color: var(--border-fire-active);
    box-shadow: var(--shadow-fire-sm);
}

/* White Button (for dark backgrounds) */
.btn-white {
    background: var(--text-white);
    color: var(--fire-red);
    font-weight: var(--font-weight-bold);
}

.btn-white:hover {
    background: var(--text-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Large Button */
.btn-lg {
    padding: 18px 45px;
    font-size: var(--font-size-lg);
}

/* Small Button */
.btn-sm {
    padding: 10px 24px;
    font-size: var(--font-size-sm);
}

/* Pulsing CTA Animation */
.btn-pulse {
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: var(--shadow-fire-md);
    }
    50% {
        box-shadow: var(--shadow-fire-xl);
    }
}

/* ===== CONTAINERS & LAYOUT ===== */
.container {
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

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

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

.section-darker {
    background-color: var(--deep-black);
}

.section-red-gradient {
    background: linear-gradient(90deg, #5c1a1a 0%, #8b2828 50%, #5c1a1a 100%);
}

.section-fire-overlay {
    position: relative;
    background: var(--charcoal);
}

.section-fire-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-fire);
    opacity: 0.05;
    pointer-events: none;
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

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

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

/* Spacing Utilities */
.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); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.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); }
.mt-5 { margin-top: var(--spacing-xl); }

/* Display Utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flex Utilities */
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* Hover Effects */
.hover-lift {
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card-hover);
}

.hover-glow:hover {
    box-shadow: var(--shadow-fire-lg);
}

/* Fire Glow Effect */
.fire-glow {
    box-shadow: var(--shadow-fire-md);
}

/* Border Utilities */
.border-fire {
    border: 1px solid var(--border-fire);
}

.border-fire-thick {
    border: 2px solid var(--border-fire);
}

.border-left-fire {
    border-left: 4px solid var(--fire-red);
}

/* Radius Utilities */
.radius-sm { border-radius: var(--border-radius-sm); }
.radius-md { border-radius: var(--border-radius-md); }
.radius-lg { border-radius: var(--border-radius-lg); }
.radius-xl { border-radius: var(--border-radius-xl); }
.radius-full { border-radius: var(--border-radius-full); }

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

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

/* Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn var(--duration-slow) ease-in;
}

/* Slide Up */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp var(--duration-slow) ease-out;
}

/* Modal Fade In */
@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Fire Particle Float */
@keyframes fireParticleFloat {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(-100vh) translateX(20px);
        opacity: 0;
    }
}

/* Glow Pulse */
@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 59, 48, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 59, 48, 0.6);
    }
}

/* Icon Pulse */
@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Chevron Rotate */
@keyframes chevronRotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(180deg);
    }
}

/* Counter Animation (applied via JS) */
@keyframes counterUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Infinite Scroll Banner */
@keyframes scrollBanner {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ===== SCROLLBAR STYLING (Dark Theme) ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--deep-black);
}

::-webkit-scrollbar-thumb {
    background: var(--smoke-grey);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-grey);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--smoke-grey) var(--deep-black);
}

/* ===== FOCUS STATES (Accessibility) ===== */
*:focus-visible {
    outline: 2px solid var(--fire-red);
    outline-offset: 2px;
}

/* ===== SELECTION ===== */
::selection {
    background-color: var(--fire-red);
    color: var(--text-white);
}

::-moz-selection {
    background-color: var(--fire-red);
    color: var(--text-white);
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    body {
        background: white;
        color: black;
    }

    .no-print {
        display: none !important;
    }
}