/*
Theme Name: Technical Applied Solutions
Theme URI: https://technicalappliedsolutions.com
Author: Technical Applied Solutions LLC
Author URI: https://technicalappliedsolutions.com
Description: Enterprise voice infrastructure single-page theme for Technical Applied Solutions LLC. Government and healthcare unified communications.
Version: 1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: technical-applied-solutions
*/

:root {
    --primary: #0f3a7d;
    --primary-light: #1a5bb8;
    --accent: #00b4d8;
    --dark: #0a1428;
    --gray-900: #1a1f35;
    --gray-800: #2d3142;
    --gray-700: #454d5c;
    --gray-600: #6b7684;
    --gray-500: #9ca3af;
    --gray-300: #e5e7eb;
    --gray-200: #f3f4f6;
    --gray-100: #f9fafb;
    --white: #ffffff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--white);
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 8vw, 3.5rem);
    color: var(--dark);
}

h2 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
    color: var(--gray-900);
}

p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.site-nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.3px;
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--primary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Hero */
.hero {
    margin-top: 60px;
    padding: 4rem 2rem 5rem;
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 30px rgba(15, 58, 125, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(15, 58, 125, 0.3);
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tech Grid - 4 columns x 2 rows, fits the box */
.tech-grid-wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    perspective: 1200px;
}

.tech-item {
    height: 150px;
    perspective: 1000px;
    cursor: pointer;
}

.tech-card {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
}

.tech-item.flipped .tech-card {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    padding: 0.75rem;
    text-align: center;
    border: 1px solid rgba(15, 58, 125, 0.1);
}

.card-front {
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.card-front:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.15);
}

.card-back {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    transform: rotateY(180deg);
    box-shadow: 0 8px 20px rgba(15, 58, 125, 0.25);
}

.card-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
    font-family: 'Syne', sans-serif;
    line-height: 1.2;
}

.card-back .card-title {
    color: var(--white);
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--gray-600);
}

.card-back .card-subtitle {
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.62rem;
    margin-bottom: 0.5rem;
}

.card-hint {
    font-size: 0.6rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-top: 0.5rem;
}

.card-back-list {
    list-style: none;
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.5;
}

.card-back-list li::before {
    content: '\2713  ';
    color: var(--accent);
    font-weight: bold;
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .tech-grid-wrapper {
        max-width: 560px;
    }
}

@media (max-width: 600px) {
    .tech-grid-wrapper {
        grid-template-columns: repeat(2, 1fr);
        max-width: 340px;
    }
}

/* Sections */
.section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.section-full {
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 1rem auto 0;
}

.bg-light {
    background: var(--gray-100);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.solution-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.solution-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.solution-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.solution-card p {
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    color: var(--gray-700);
    position: relative;
}

.feature-list li::before {
    content: '\2192';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.diff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.diff-item {
    padding: 2rem;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(15, 58, 125, 0.02) 0%, rgba(0, 180, 216, 0.02) 100%);
    border: 1px solid rgba(0, 180, 216, 0.1);
    transition: all 0.3s ease;
}

.diff-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.diff-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-family: 'Syne', sans-serif;
}

.diff-item h4 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.diff-item p {
    font-size: 0.95rem;
}

.performance-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.performance-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    border-left: 5px solid var(--primary);
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.performance-card:hover {
    border-left-color: var(--accent);
    transform: translateX(4px);
}

.performance-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.performance-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.perf-detail {
    border-top: 2px solid var(--accent);
    padding-top: 1rem;
}

.perf-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray-600);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.perf-value {
    font-size: 1rem;
    color: var(--gray-900);
    font-weight: 600;
}

.credential-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.badge {
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(15, 58, 125, 0.05), rgba(0, 180, 216, 0.05));
    border: 1px solid var(--accent);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

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

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    text-align: center;
    padding: 4rem 2rem;
    border-radius: 16px;
    max-width: 1400px;
    margin: 3rem auto;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

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

.cta-section .btn:hover {
    background: var(--gray-100);
}

.cta-section a.email-link {
    color: var(--white);
    text-decoration: underline;
}

.site-footer {
    background: var(--gray-900);
    color: var(--gray-500);
    padding: 2rem;
    text-align: center;
    font-size: 0.9rem;
}