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

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

:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;

    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;

    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;

    --border-color: #e5e7eb;
    --border-light: #f3f4f6;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* 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;

    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-4);
    }
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

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

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn--full {
    width: 100%;
}

/* ================================
   Header & Navigation
   ================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-fast);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
}

.nav__logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
    list-style: none;
}

.nav__link {
    color: var(--text-primary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.nav__link--cta {
    background-color: var(--primary-color);
    color: white !important;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
}

.nav__link--cta:hover {
    background-color: var(--primary-dark);
    color: white !important;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-6);
        gap: var(--spacing-4);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-normal);
        pointer-events: none;
    }

    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav__toggle {
        display: flex;
    }
}

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

.hero {
    padding: calc(80px + var(--spacing-20)) 0 var(--spacing-20);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    overflow: hidden;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

.hero__title--accent {
    color: var(--primary-color);
}

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

.hero__actions {
    display: flex;
    gap: var(--spacing-4);
}

.hero__visual {
    position: relative;
    height: 400px;
}

.hero__shape {
    position: absolute;
    border-radius: var(--radius-xl);
    animation: float 6s ease-in-out infinite;
}

.hero__shape--1 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    top: 20%;
    right: 20%;
    animation-delay: 0s;
}

.hero__shape--2 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--secondary-color), #fbbf24);
    bottom: 30%;
    right: 40%;
    animation-delay: 2s;
}

.hero__shape--3 {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-color), #34d399);
    top: 50%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .hero__visual {
        height: 200px;
        margin-top: var(--spacing-8);
    }
}

/* ================================
   Services Section
   ================================ */

.services {
    padding: var(--spacing-20) 0;
    background-color: var(--bg-secondary);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.service__card {
    background-color: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
}

.service__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-6);
}

.service__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.service__description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ================================
   Projects Section
   ================================ */

.projects {
    padding: var(--spacing-20) 0;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.project__card {
    background-color: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.project__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.project__image {
    height: 200px;
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project__placeholder {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
}

.project__placeholder--pawcoach {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
}

.project__content {
    padding: var(--spacing-6);
}

.project__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.project__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
}

.project__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.project__tag {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

.about {
    padding: var(--spacing-20) 0;
    background-color: var(--bg-secondary);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.about__description {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    margin-bottom: var(--spacing-6);
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.about__visual {
    position: relative;
    height: 400px;
}

.about__shape {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50% 40% 60% 30%;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { border-radius: 50% 40% 60% 30%; }
    25% { border-radius: 30% 60% 40% 50%; }
    50% { border-radius: 60% 30% 50% 40%; }
    75% { border-radius: 40% 50% 30% 60%; }
}

@media (max-width: 768px) {
    .about__content {
        grid-template-columns: 1fr;
    }

    .about__stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-4);
    }
}

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

.contact {
    padding: var(--spacing-20) 0;
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

.contact__item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.contact__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact__details h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.contact__details p,
.contact__details a {
    color: var(--text-secondary);
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.form__group {
    display: flex;
    flex-direction: column;
}

.form__input,
.form__textarea {
    padding: var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    resize: vertical;
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

@media (max-width: 768px) {
    .contact__content {
        grid-template-columns: 1fr;
    }
}

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

.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-12);
}

.footer__logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
}

.footer__description {
    margin-top: var(--spacing-4);
    color: #9ca3af;
    line-height: 1.7;
}

.footer__links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
}

.footer__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: white;
}

.footer__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer__list a {
    color: #9ca3af;
    transition: color var(--transition-fast);
}

.footer__list a:hover {
    color: white;
}

.footer__bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid #374151;
    text-align: center;
    color: #9ca3af;
}

@media (max-width: 768px) {
    .footer__content {
        grid-template-columns: 1fr;
    }

    .footer__links {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
}

/* ================================
   Utilities
   ================================ */

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

.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

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

@media (max-width: 640px) {
    .hero__actions {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .projects__grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Animations & Interactions
   ================================ */

@media (prefers-reduced-motion: no-preference) {
    .service__card,
    .project__card {
        transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    }

    .btn {
        transition: all var(--transition-fast);
    }
}

/* Scroll behavior */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}