:root {
    --color-primary: #3E2723;
    --color-secondary: #5D4037;
    --color-tertiary: #6D4C41;
    --color-beige: #F5F5DC;
    --color-beige-dark: #E8E8CE;
    --color-white: #FFFFFF;
    --color-success: #4CAF50;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px rgba(62, 39, 35, 0.2);
    --shadow-md: 0 10px 40px rgba(62, 39, 35, 0.15);
    --shadow-lg: 0 15px 50px rgba(62, 39, 35, 0.2);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--color-beige) 0%, var(--color-beige-dark) 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.6;
}

.container {
    text-align: center;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
}

.main {
    background-color: var(--color-white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    padding: 2.5rem 2rem;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
}

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

.footer {
    text-align: center;
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.footer a {
    display: inline-block;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    opacity: 0.9;
}

.footer a:hover {
    transform: translateY(-3px) scale(1.1);
    opacity: 1;
}

.footer img {
    display: block;
    filter: drop-shadow(var(--shadow-sm));
}

.language-toggle {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
}

.language-toggle a {
    margin: 0 0.5rem;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
    cursor: pointer;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    display: inline-block;
    line-height: 1;
    text-transform: uppercase;
}

.language-toggle a:hover {
    background-color: var(--color-beige);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.language-toggle a.active {
    background-color: var(--color-primary);
    color: var(--color-beige);
}

.language-toggle a:active {
    transform: translateY(0);
}

.language-toggle a:focus {
    outline: none;
}

.language-toggle a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.email-container {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition-normal);
    position: relative;
    color: var(--color-tertiary);
    vertical-align: middle;
}

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

.copy-btn:active {
    transform: translateY(0) scale(0.95);
}

.copy-btn:focus {
    outline: none;
}

.copy-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.copy-btn svg {
    width: 20px;
    height: 20px;
    transition: all var(--transition-normal);
}

.clipboard-icon {
    display: block;
}

.check-icon {
    display: none;
    color: var(--color-success);
}

.copy-btn.copied .clipboard-icon {
    display: none;
}

.copy-btn.copied .check-icon {
    display: block;
    animation: checkPop var(--transition-fast);
}

@keyframes checkPop {
    0% {
        transform: scale(0) rotate(-45deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.2) rotate(0deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

h1 {
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

p {
    color: var(--color-secondary);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

strong {
    color: var(--color-primary);
    font-weight: 600;
}

a {
    color: var(--color-tertiary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    position: relative;
}

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

a:focus {
    outline: none;
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

main a[href^="https"]::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

main a[href^="https"]:hover::after {
    transform: scaleX(1);
}

.smile {
    font-size: 2.5rem;
    margin-top: 1.5rem;
    animation: wave 2s ease-in-out infinite;
    display: inline-block;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}

.english,
.estonian {
    display: none;
    animation: fadeIn var(--transition-slow) ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .main {
        padding: 2rem 1.5rem;
        border-radius: 12px;
    }

    .language-toggle {
        top: 1.25rem;
        right: 1.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    p {
        font-size: 1rem;
    }

    .language-toggle a {
        font-size: 0.85rem;
        padding: 0.35rem 0.7rem;
        margin: 0 0.4rem;
    }

    .smile {
        font-size: 2rem;
    }

    .footer {
        gap: 0.75rem;
        margin-top: 1rem;
    }

    .footer img {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .main {
        padding: 1.5rem 1.25rem;
        padding-top: 3rem;
    }

    .language-toggle {
        top: 1rem;
        right: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    p {
        font-size: 0.95rem;
    }

    .language-toggle a {
        font-size: 0.8rem;
        padding: 0.35rem 0.7rem;
        margin: 0 0.3rem;
    }

    .footer img {
        width: 40px;
        height: 40px;
    }
}

@media (min-width: 769px) {
    .main {
        padding: 3rem 2.5rem;
    }

    h1 {
        font-size: 2.25rem;
    }
}